36 lines
1.2 KiB
LLVM
36 lines
1.2 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
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; RUN: llc -global-isel=1 -mtriple=aarch64-linux-gnu -o - %s | FileCheck %s
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declare void @use_addr(ptr)
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declare ptr @llvm.stacksave.p0()
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declare void @llvm.stackrestore.p0(ptr)
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define void @test_scoped_alloca(i64 %n) {
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; CHECK-LABEL: test_scoped_alloca:
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; CHECK: // %bb.0:
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; CHECK-NEXT: stp x29, x30, [sp, #-32]! // 16-byte Folded Spill
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; CHECK-NEXT: str x19, [sp, #16] // 8-byte Folded Spill
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; CHECK-NEXT: mov x29, sp
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; CHECK-NEXT: .cfi_def_cfa w29, 32
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; CHECK-NEXT: .cfi_offset w19, -16
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; CHECK-NEXT: .cfi_offset w30, -24
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; CHECK-NEXT: .cfi_offset w29, -32
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; CHECK-NEXT: add x9, x0, #15
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; CHECK-NEXT: mov x8, sp
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; CHECK-NEXT: mov x19, sp
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; CHECK-NEXT: and x9, x9, #0xfffffffffffffff0
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; CHECK-NEXT: sub x0, x8, x9
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; CHECK-NEXT: mov sp, x0
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; CHECK-NEXT: bl use_addr
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; CHECK-NEXT: mov sp, x19
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; CHECK-NEXT: mov sp, x29
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; CHECK-NEXT: ldr x19, [sp, #16] // 8-byte Folded Reload
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; CHECK-NEXT: ldp x29, x30, [sp], #32 // 16-byte Folded Reload
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; CHECK-NEXT: ret
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%sp = call ptr @llvm.stacksave.p0()
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%addr = alloca i8, i64 %n
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call void @use_addr(ptr %addr)
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call void @llvm.stackrestore.p0(ptr %sp)
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ret void
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}
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