b96d3b2dd8
Add support for the new pass manager to MemorySSA pass. Change MemorySSA to be computed eagerly upon construction. Change MemorySSAWalker to be owned by the MemorySSA object that creates it. Reviewers: dberlin, george.burgess.iv Subscribers: mcrosier, llvm-commits Differential Revision: http://reviews.llvm.org/D19664 llvm-svn: 271432
33 lines
934 B
LLVM
33 lines
934 B
LLVM
; RUN: opt -basicaa -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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;
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; Makes sure we have a sane model if both successors of some block is the same
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; block.
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define i32 @foo(i1 %a) {
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entry:
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%0 = alloca i32, align 4
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; CHECK: 1 = MemoryDef(liveOnEntry)
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; CHECK-NEXT: store i32 4
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store i32 4, i32* %0
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br i1 %a, label %Loop.Body, label %Loop.End
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Loop.Body:
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; CHECK: 4 = MemoryPhi({entry,1},{Loop.End,3})
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; CHECK-NEXT: 2 = MemoryDef(4)
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; CHECK-NEXT: store i32 5
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store i32 5, i32* %0, align 4
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br i1 %a, label %Loop.End, label %Loop.End ; WhyDoWeEvenHaveThatLever.gif
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Loop.End:
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; CHECK: 3 = MemoryPhi({entry,1},{Loop.Body,2},{Loop.Body,2})
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; CHECK-NEXT: MemoryUse(3)
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; CHECK-NEXT: %1 = load
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%1 = load i32, i32* %0, align 4
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%2 = icmp eq i32 5, %1
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br i1 %2, label %Ret, label %Loop.Body
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Ret:
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ret i32 %1
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}
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