# RUN: llc -o - %s -mtriple=x86_64-pc-windows-msvc -run-pass=machinelicm | FileCheck %s # # This test checks that MachineLICM doesn't hoist loads out of funclets. # Manually modified from the IR of the following C++ function by running # llc -stop-after=machine-cp. # # void may_throw(); # void use(int); # # void test(int n, int arg) # { # for (int i = 0 ; i < n ; i++) # try { # may_throw(); # } # catch (...) { # // Two uses to get 'arg' allocated to a register # use(arg); # use(arg); # } # } --- | target triple = "x86_64-pc-windows-msvc" define void @test(i32 %n, i32 %arg) personality ptr @__CxxFrameHandler3 { entry: %cmp3 = icmp sgt i32 %n, 0 br i1 %cmp3, label %for.body.preheader, label %for.cond.cleanup for.body.preheader: ; preds = %entry br label %for.body for.cond.cleanup: ; preds = %for.inc, %entry ret void for.body: ; preds = %for.body.preheader, %for.inc %lsr.iv = phi i32 [ %n, %for.body.preheader ], [ %lsr.iv.next, %for.inc ] invoke void @may_throw() to label %for.inc unwind label %catch.dispatch catch.dispatch: ; preds = %for.body %0 = catchswitch within none [label %catch] unwind to caller catch: ; preds = %catch.dispatch %1 = catchpad within %0 [ptr null, i32 64, ptr null] call void @use(i32 %arg) [ "funclet"(token %1) ] call void @use(i32 %arg) [ "funclet"(token %1) ] catchret from %1 to label %for.inc for.inc: ; preds = %catch, %for.body %lsr.iv.next = add i32 %lsr.iv, -1 %exitcond.not = icmp eq i32 %lsr.iv.next, 0 br i1 %exitcond.not, label %for.cond.cleanup, label %for.body } declare i32 @__CxxFrameHandler3(...) declare void @may_throw() declare void @use(i32) ... --- name: test alignment: 16 tracksRegLiveness: true hasEHCatchret: true hasEHScopes: true hasEHFunclets: true debugInstrRef: true tracksDebugUserValues: true liveins: - { reg: '$ecx' } - { reg: '$edx' } frameInfo: maxAlignment: 8 hasCalls: true hasOpaqueSPAdjustment: true stack: - { id: 0, type: spill-slot, size: 4, alignment: 4 } - { id: 1, type: spill-slot, size: 4, alignment: 4 } machineFunctionInfo: {} body: | bb.0.entry: successors: %bb.1, %bb.2 liveins: $ecx, $edx MOV32mr %stack.1, 1, $noreg, 0, $noreg, $edx :: (store (s32) into %stack.1) TEST32rr renamable $ecx, renamable $ecx, implicit-def $eflags JCC_1 %bb.2, 14, implicit killed $eflags bb.1: liveins: $ecx JMP_1 %bb.3 bb.2.for.cond.cleanup: RET 0 bb.3.for.body: successors: %bb.5, %bb.4 liveins: $ecx EH_LABEL MOV32mr %stack.0, 1, $noreg, 0, $noreg, killed renamable $ecx :: (store (s32) into %stack.0) ADJCALLSTACKDOWN64 32, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp CALL64pcrel32 @may_throw, csr_win64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp ADJCALLSTACKUP64 32, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp EH_LABEL JMP_1 %bb.5 bb.4.catch (landing-pad, ehfunclet-entry): successors: %bb.5 ADJCALLSTACKDOWN64 32, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp renamable $esi = MOV32rm %stack.1, 1, $noreg, 0, $noreg :: (load (s32) from %stack.1) $ecx = COPY renamable $esi CALL64pcrel32 @use, csr_win64, implicit $rsp, implicit $ssp, implicit $ecx, implicit-def $rsp, implicit-def $ssp ADJCALLSTACKUP64 32, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp ADJCALLSTACKDOWN64 32, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp $ecx = COPY killed renamable $esi CALL64pcrel32 @use, csr_win64, implicit $rsp, implicit $ssp, implicit $ecx, implicit-def $rsp, implicit-def $ssp ADJCALLSTACKUP64 32, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp CATCHRET %bb.5, %bb.0 bb.5.for.inc: successors: %bb.2, %bb.3 renamable $ecx = MOV32rm %stack.0, 1, $noreg, 0, $noreg :: (load (s32) from %stack.0) renamable $ecx = DEC32r killed renamable $ecx, implicit-def $eflags JCC_1 %bb.2, 4, implicit killed $eflags JMP_1 %bb.3 ... # # CHECK: bb.4.catch # CHECK: ADJCALLSTACKDOWN64 # CHECK-NEXT: renamable [[REG:\$[a-z0-9]+]] = MOV32rm %stack.1 # CHECK-NEXT: $ecx = COPY renamable [[REG]] # CHECK-NEXT: CALL64pcrel32 @use