forked from OSchip/llvm-project
52 lines
2.2 KiB
LLVM
52 lines
2.2 KiB
LLVM
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; RUN: opt -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s
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; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s
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; This testcase is reduced from SingleSource/Benchmarks/Misc/fbench.c
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; It is testing to make sure that the MemorySSA use optimizer
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; comes up with right answers when dealing with multiple MemoryLocations
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; over different blocks. See PR28880 for more details.
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@global = external hidden unnamed_addr global double, align 8
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@global.1 = external hidden unnamed_addr global double, align 8
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; Function Attrs: nounwind ssp uwtable
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define hidden fastcc void @hoge() unnamed_addr #0 {
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bb:
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br i1 undef, label %bb1, label %bb2
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bb1: ; preds = %bb
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; These accesses should not conflict.
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; CHECK: 1 = MemoryDef(liveOnEntry)
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; 1 = MemoryDef(liveOnEntry)
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; CHECK-NEXT: store double undef, double* @global, align 8
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store double undef, double* @global, align 8
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; CHECK: MemoryUse(liveOnEntry)
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; MemoryUse(liveOnEntry)
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; CHECK-NEXT: %tmp = load double, double* @global.1, align 8
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%tmp = load double, double* @global.1, align 8
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unreachable
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bb2: ; preds = %bb
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br label %bb3
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bb3: ; preds = %bb2
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br i1 undef, label %bb4, label %bb6
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bb4: ; preds = %bb3
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; These accesses should conflict.
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; CHECK: 2 = MemoryDef(liveOnEntry)
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; 2 = MemoryDef(liveOnEntry)
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; CHECK-NEXT: store double 0.000000e+00, double* @global.1, align 8
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store double 0.000000e+00, double* @global.1, align 8
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; CHECK: MemoryUse(2)
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; MemoryUse(2)
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; CHECK-NEXT: %tmp5 = load double, double* @global.1, align 8
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%tmp5 = load double, double* @global.1, align 8
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unreachable
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bb6: ; preds = %bb3
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unreachable
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}
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attributes #0 = { nounwind ssp uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="core2" "target-features"="+cx16,+fxsr,+mmx,+sse,+sse2,+sse3,+ssse3" "unsafe-fp-math"="false" "use-soft-float"="false" }
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