441 lines
13 KiB
YAML
441 lines
13 KiB
YAML
# RUN: llc -run-pass=prologepilog %s -o - | FileCheck %s
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# Tests to check that CPSR is saved and restored if live when we emit tMOVi32imm
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# to resolve a frame offset.
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--- |
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target triple = "thumbv6m-arm-none-eabi"
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define void @test_def_in_block(i32 %x) #0 {
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entry:
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%var = alloca i32, align 4
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%dummy = alloca [2048 x i8], align 1
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%cmp = icmp eq i32 %x, 0
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store i32 %x, ptr %var, align 4
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br i1 %cmp, label %if.then, label %if.end
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if.then:
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br label %if.end
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if.end:
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ret void
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}
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define void @test_live_in(i32 %x) #0 {
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entry:
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%var = alloca i32, align 4
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%dummy = alloca [2048 x i8], align 1
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%cmp = icmp eq i32 %x, 0
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br i1 %cmp, label %if.then, label %if.end
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if.then:
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store i32 %x, ptr %var, align 4
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%cmp1 = icmp slt i32 %x, 0
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br i1 %cmp1, label %if.then2, label %if.end
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if.then2:
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br label %if.end
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if.end:
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ret void
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}
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define void @test_live_out(i32 %x) #0 {
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entry:
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%var = alloca i32, align 4
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%dummy = alloca [2048 x i8], align 1
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%cmp = icmp eq i32 %x, 0
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store i32 %x, ptr %var, align 4
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br label %if.then
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if.then:
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br i1 %cmp, label %if.then2, label %if.end
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if.then2:
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br label %if.end
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if.end:
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ret void
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}
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define void @test_live_out_def_after_mov(i32 %x) #0 {
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entry:
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%var = alloca i32, align 4
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%dummy = alloca [2048 x i8], align 1
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store i32 %x, ptr %var, align 4
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%cmp = icmp eq i32 %x, 0
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br label %if.then
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if.then:
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br i1 %cmp, label %if.then2, label %if.end
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if.then2:
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br label %if.end
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if.end:
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ret void
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}
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attributes #0 = { "target-features"="+execute-only" }
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...
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---
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name: test_def_in_block
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alignment: 2
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exposesReturnsTwice: false
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legalized: false
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regBankSelected: false
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selected: false
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failedISel: false
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tracksRegLiveness: true
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hasWinCFI: false
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callsEHReturn: false
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callsUnwindInit: false
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hasEHCatchret: false
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hasEHScopes: false
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hasEHFunclets: false
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isOutlined: false
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debugInstrRef: false
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failsVerification: false
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tracksDebugUserValues: false
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registers: []
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liveins:
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- { reg: '$r0', virtual-reg: '' }
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frameInfo:
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isFrameAddressTaken: false
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isReturnAddressTaken: false
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hasStackMap: false
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hasPatchPoint: false
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stackSize: 0
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offsetAdjustment: 0
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maxAlignment: 4
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adjustsStack: false
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hasCalls: false
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stackProtector: ''
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functionContext: ''
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maxCallFrameSize: 0
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cvBytesOfCalleeSavedRegisters: 0
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hasOpaqueSPAdjustment: false
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hasVAStart: false
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hasMustTailInVarArgFunc: false
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hasTailCall: false
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localFrameSize: 2052
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savePoint: ''
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restorePoint: ''
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fixedStack: []
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stack:
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- { id: 0, name: var, type: default, offset: 0, size: 4, alignment: 4,
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stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -4, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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- { id: 1, name: dummy, type: default, offset: 0, size: 2048, alignment: 1,
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stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -2052, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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entry_values: []
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callSites: []
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debugValueSubstitutions: []
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constants: []
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machineFunctionInfo: {}
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body: |
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bb.0.entry:
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successors: %bb.1(0x40000000), %bb.2(0x40000000)
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liveins: $r0
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; CHECK-LABEL: name: test_def_in_block
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; CHECK-LABEL: bb.0.entry:
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; CHECK: tCMPi8 renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
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; CHECK-NEXT: $r2 = t2MRS_M 2048, 14 /* CC::al */, $noreg, implicit $cpsr
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; CHECK-NEXT: $r1 = tMOVi32imm 2048, implicit-def $cpsr
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; CHECK-NEXT: t2MSR_M 2048, killed $r2, 14 /* CC::al */, $noreg, implicit-def $cpsr
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; CHECK-NEXT: $r1 = tADDhirr $r1, killed $sp, 14 /* CC::al */, $noreg
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; CHECK-NEXT: tSTRi renamable $r0, killed $r1, 0, 14 /* CC::al */, $noreg :: (store (s32) into %ir.var)
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tCMPi8 renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
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tSTRspi renamable $r0, %stack.0.var, 0, 14 /* CC::al */, $noreg :: (store (s32) into %ir.var)
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tBcc %bb.1, 1 /* CC::ne */, killed $cpsr
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tB %bb.2, 14 /* CC::al */, $noreg
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bb.1.if.then:
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successors: %bb.2(0x80000000)
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tB %bb.2, 14 /* CC::al */, $noreg
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bb.2.if.end:
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tBX_RET 14 /* CC::al */, $noreg
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...
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---
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name: test_live_in
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alignment: 2
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exposesReturnsTwice: false
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legalized: false
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regBankSelected: false
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selected: false
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failedISel: false
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tracksRegLiveness: true
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hasWinCFI: false
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callsEHReturn: false
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callsUnwindInit: false
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hasEHCatchret: false
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hasEHScopes: false
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hasEHFunclets: false
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isOutlined: false
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debugInstrRef: false
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failsVerification: false
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tracksDebugUserValues: false
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registers: []
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liveins:
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- { reg: '$r0', virtual-reg: '' }
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frameInfo:
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isFrameAddressTaken: false
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isReturnAddressTaken: false
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hasStackMap: false
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hasPatchPoint: false
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stackSize: 0
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offsetAdjustment: 0
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maxAlignment: 4
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adjustsStack: false
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hasCalls: false
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stackProtector: ''
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functionContext: ''
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maxCallFrameSize: 0
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cvBytesOfCalleeSavedRegisters: 0
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hasOpaqueSPAdjustment: false
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hasVAStart: false
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hasMustTailInVarArgFunc: false
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hasTailCall: false
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localFrameSize: 2052
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savePoint: ''
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restorePoint: ''
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fixedStack: []
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stack:
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- { id: 0, name: var, type: default, offset: 0, size: 4, alignment: 4,
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stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -4, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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- { id: 1, name: dummy, type: default, offset: 0, size: 2048, alignment: 1,
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stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -2052, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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entry_values: []
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callSites: []
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debugValueSubstitutions: []
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constants: []
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machineFunctionInfo: {}
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body: |
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bb.0.entry:
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successors: %bb.1(0x40000000), %bb.3(0x40000000)
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liveins: $r0
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tCMPi8 renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
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tBcc %bb.3, 1 /* CC::ne */, $cpsr
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tB %bb.1, 14 /* CC::al */, $noreg
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bb.1.if.then:
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successors: %bb.2(0x40000000), %bb.3(0x40000000)
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liveins: $r0, $cpsr
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; CHECK-LABEL: name: test_live_in
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; CHECK-LABEL: bb.1.if.then:
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; CHECK: $r2 = t2MRS_M 2048, 14 /* CC::al */, $noreg, implicit $cpsr
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; CHECK-NEXT: $r1 = tMOVi32imm 2048, implicit-def $cpsr
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; CHECK-NEXT: t2MSR_M 2048, killed $r2, 14 /* CC::al */, $noreg, implicit-def $cpsr
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; CHECK-NEXT: $r1 = tADDhirr $r1, killed $sp, 14 /* CC::al */, $noreg
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; CHECK-NEXT: tSTRi renamable $r0, killed $r1, 0, 14 /* CC::al */, $noreg :: (store (s32) into %ir.var)
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tSTRspi renamable $r0, %stack.0.var, 0, 14 /* CC::al */, $noreg :: (store (s32) into %ir.var)
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tBcc %bb.3, 5 /* CC::pl */, killed $cpsr
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tB %bb.2, 14 /* CC::al */, $noreg
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bb.2.if.then2:
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successors: %bb.3(0x80000000)
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tB %bb.3, 14 /* CC::al */, $noreg
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bb.3.if.end:
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tBX_RET 14 /* CC::al */, $noreg
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...
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---
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name: test_live_out
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alignment: 2
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exposesReturnsTwice: false
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legalized: false
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regBankSelected: false
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selected: false
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failedISel: false
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tracksRegLiveness: true
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hasWinCFI: false
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callsEHReturn: false
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callsUnwindInit: false
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hasEHCatchret: false
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hasEHScopes: false
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hasEHFunclets: false
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isOutlined: false
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debugInstrRef: false
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failsVerification: false
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tracksDebugUserValues: false
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registers: []
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liveins:
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- { reg: '$r0', virtual-reg: '' }
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frameInfo:
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isFrameAddressTaken: false
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isReturnAddressTaken: false
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hasStackMap: false
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hasPatchPoint: false
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stackSize: 0
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offsetAdjustment: 0
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maxAlignment: 4
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adjustsStack: false
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hasCalls: false
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stackProtector: ''
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functionContext: ''
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maxCallFrameSize: 0
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cvBytesOfCalleeSavedRegisters: 0
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hasOpaqueSPAdjustment: false
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hasVAStart: false
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hasMustTailInVarArgFunc: false
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hasTailCall: false
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localFrameSize: 2052
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savePoint: ''
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restorePoint: ''
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fixedStack: []
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stack:
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- { id: 0, name: var, type: default, offset: 0, size: 4, alignment: 4,
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stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -4, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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- { id: 1, name: dummy, type: default, offset: 0, size: 2048, alignment: 1,
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stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -2052, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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entry_values: []
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callSites: []
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debugValueSubstitutions: []
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constants: []
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machineFunctionInfo: {}
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body: |
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bb.0.entry:
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successors: %bb.1(0x40000000)
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liveins: $r0
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; CHECK-LABEL: name: test_live_out
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; CHECK-LABEL: bb.0.entry:
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; CHECK: tCMPi8 renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
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; CHECK-NEXT: $r2 = t2MRS_M 2048, 14 /* CC::al */, $noreg, implicit $cpsr
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; CHECK-NEXT: $r1 = tMOVi32imm 2048, implicit-def $cpsr
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; CHECK-NEXT: t2MSR_M 2048, killed $r2, 14 /* CC::al */, $noreg, implicit-def $cpsr
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; CHECK-NEXT: $r1 = tADDhirr $r1, killed $sp, 14 /* CC::al */, $noreg
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; CHECK-NEXT: tSTRi renamable $r0, killed $r1, 0, 14 /* CC::al */, $noreg :: (store (s32) into %ir.var)
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tCMPi8 renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
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tSTRspi renamable $r0, %stack.0.var, 0, 14 /* CC::al */, $noreg :: (store (s32) into %ir.var)
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tB %bb.1, 14 /* CC::al */, $noreg
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bb.1.if.then:
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successors: %bb.2(0x40000000), %bb.3(0x40000000)
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liveins: $cpsr
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tBcc %bb.3, 5 /* CC::pl */, killed $cpsr
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tB %bb.2, 14 /* CC::al */, $noreg
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bb.2.if.then2:
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successors: %bb.3(0x80000000)
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tB %bb.3, 14 /* CC::al */, $noreg
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bb.3.if.end:
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tBX_RET 14 /* CC::al */, $noreg
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...
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---
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name: test_live_out_def_after_mov
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alignment: 2
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exposesReturnsTwice: false
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legalized: false
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regBankSelected: false
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selected: false
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failedISel: false
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tracksRegLiveness: true
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hasWinCFI: false
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callsEHReturn: false
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callsUnwindInit: false
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hasEHCatchret: false
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hasEHScopes: false
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hasEHFunclets: false
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isOutlined: false
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debugInstrRef: false
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failsVerification: false
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tracksDebugUserValues: false
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registers: []
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liveins:
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- { reg: '$r0', virtual-reg: '' }
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frameInfo:
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isFrameAddressTaken: false
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isReturnAddressTaken: false
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hasStackMap: false
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hasPatchPoint: false
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stackSize: 0
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offsetAdjustment: 0
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maxAlignment: 4
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adjustsStack: false
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hasCalls: false
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stackProtector: ''
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functionContext: ''
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maxCallFrameSize: 0
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cvBytesOfCalleeSavedRegisters: 0
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hasOpaqueSPAdjustment: false
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hasVAStart: false
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hasMustTailInVarArgFunc: false
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hasTailCall: false
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localFrameSize: 2052
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savePoint: ''
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restorePoint: ''
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fixedStack: []
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stack:
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- { id: 0, name: var, type: default, offset: 0, size: 4, alignment: 4,
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stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -4, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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- { id: 1, name: dummy, type: default, offset: 0, size: 2048, alignment: 1,
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stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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local-offset: -2052, debug-info-variable: '', debug-info-expression: '',
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debug-info-location: '' }
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entry_values: []
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callSites: []
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debugValueSubstitutions: []
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constants: []
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machineFunctionInfo: {}
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body: |
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bb.0.entry:
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successors: %bb.1(0x40000000)
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liveins: $r0
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; Here the live-out cpsr is defined after the tMOVi32imm, so cpsr doesn't
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; need to be saved.
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; CHECK-LABEL: name: test_live_out
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; CHECK-LABEL: bb.0.entry:
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; CHECK: $r1 = tMOVi32imm 2048, implicit-def $cpsr
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; CHECK-NEXT: $r1 = tADDhirr $r1, killed $sp, 14 /* CC::al */, $noreg
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; CHECK-NEXT: tSTRi renamable $r0, killed $r1, 0, 14 /* CC::al */, $noreg :: (store (s32) into %ir.var)
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; CHECK-NEXT: tCMPi8 renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
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tSTRspi renamable $r0, %stack.0.var, 0, 14 /* CC::al */, $noreg :: (store (s32) into %ir.var)
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tCMPi8 renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
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tB %bb.1, 14 /* CC::al */, $noreg
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bb.1.if.then:
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successors: %bb.2(0x40000000), %bb.3(0x40000000)
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liveins: $cpsr
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tBcc %bb.3, 5 /* CC::pl */, killed $cpsr
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tB %bb.2, 14 /* CC::al */, $noreg
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bb.2.if.then2:
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successors: %bb.3(0x80000000)
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tB %bb.3, 14 /* CC::al */, $noreg
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bb.3.if.end:
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tBX_RET 14 /* CC::al */, $noreg
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...
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