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24ae5ce54b
MemoryPhis should be added in the IDF of the blocks newly gaining Defs. This includes the blocks that gained a Phi and the block gaining a Def, if the block did not have one before. Resolves PR43427. llvm-svn: 373505
43 lines
1.3 KiB
LLVM
43 lines
1.3 KiB
LLVM
; RUN: opt -disable-output -licm -print-memoryssa -enable-mssa-loop-dependency=true < %s 2>&1 | FileCheck %s
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; CHECK-LABEL: @f()
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; CHECK: 8 = MemoryPhi(
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; CHECK: 7 = MemoryPhi(
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; CHECK: 9 = MemoryPhi(
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define void @f() {
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entry:
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%e = alloca i16, align 1
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br label %lbl1
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lbl1: ; preds = %if.else, %cleanup, %entry
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store i16 undef, i16* %e, align 1
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call void @g()
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br i1 undef, label %for.end, label %if.else
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for.end: ; preds = %lbl1
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br i1 undef, label %lbl3, label %lbl2
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lbl2: ; preds = %lbl3, %for.end
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br label %lbl3
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lbl3: ; preds = %lbl2, %for.end
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br i1 undef, label %lbl2, label %cleanup
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cleanup: ; preds = %lbl3
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%cleanup.dest = load i32, i32* undef, align 1
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%switch = icmp ult i32 %cleanup.dest, 1
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br i1 %switch, label %cleanup.cont, label %lbl1
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cleanup.cont: ; preds = %cleanup
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call void @llvm.lifetime.end.p0i8(i64 1, i8* null)
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ret void
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if.else: ; preds = %lbl1
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br label %lbl1
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}
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declare void @g()
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; Function Attrs: argmemonly nounwind willreturn
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declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture)
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