54 lines
1.7 KiB
LLVM
54 lines
1.7 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -callsite-splitting -S -o - < %s | FileCheck %s
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; Check that we can split the critical edge between Top and CallSiteBB, and
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; rewrite the first callbr's indirect destination correctly.
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define void @caller() {
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; CHECK-LABEL: @caller(
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; CHECK-NEXT: Top:
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; CHECK-NEXT: callbr void asm sideeffect "", "X,~{dirflag},~{fpsr},~{flags}"(i8* blockaddress(@caller, [[TOP_SPLIT:%.*]]))
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; CHECK-NEXT: to label [[NEXTCOND:%.*]] [label %Top.split]
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; CHECK-LABEL: Top.split:
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; CHECK-NEXT: call void @callee(i1 false)
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; CHECK-NEXT: br label [[CALLSITEBB:%.*]]
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; CHECK-LABEL: NextCond:
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; CHECK-NEXT: br label [[NEXTCOND_SPLIT:%.*]]
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; CHECK-LABEL: NextCond.split:
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; CHECK-NEXT: call void @callee(i1 true)
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; CHECK-NEXT: br label [[CALLSITEBB]]
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; CHECK-LABEL: CallSiteBB:
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; CHECK-NEXT: [[PHI:%.*]] = phi i1 [ false, [[TOP_SPLIT]] ], [ true, [[NEXTCOND_SPLIT]] ]
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; CHECK-NEXT: callbr void asm sideeffect "", "r,X,~{dirflag},~{fpsr},~{flags}"(i1 [[PHI]], i8* blockaddress(@caller, [[END2:%.*]]))
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; CHECK-NEXT: to label [[END:%.*]] [label %End2]
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; CHECK-LABEL: End:
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; CHECK-NEXT: ret void
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; CHECK-LABEL: End2:
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; CHECK-NEXT: ret void
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;
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Top:
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callbr void asm sideeffect "", "X,~{dirflag},~{fpsr},~{flags}"(i8* blockaddress(@caller, %CallSiteBB))
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to label %NextCond [label %CallSiteBB]
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NextCond:
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br label %CallSiteBB
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CallSiteBB:
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%phi = phi i1 [0, %Top],[1, %NextCond]
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call void @callee(i1 %phi)
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callbr void asm sideeffect "", "r,X,~{dirflag},~{fpsr},~{flags}"(i1 %phi, i8* blockaddress(@caller, %End2))
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to label %End [label %End2]
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End:
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ret void
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End2:
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ret void
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}
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define void @callee(i1 %b) {
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; CHECK-LABEL: @callee(
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; CHECK-NEXT: ret void
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;
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ret void
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}
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