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
55 lines
1.3 KiB
LLVM
55 lines
1.3 KiB
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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; Ensuring that external functions without attributes are MemoryDefs
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@g = external global i32
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declare void @modifyG()
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define i32 @foo() {
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; CHECK: MemoryUse(liveOnEntry)
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; CHECK-NEXT: %1 = load i32
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%1 = load i32, i32* @g
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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* @g, align 4
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; CHECK: 2 = MemoryDef(1)
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; CHECK-NEXT: call void @modifyG()
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call void @modifyG()
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; CHECK: MemoryUse(2)
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; CHECK-NEXT: %2 = load i32
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%2 = load i32, i32* @g
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%3 = add i32 %2, %1
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ret i32 %3
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}
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declare void @readEverything() readonly
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declare void @clobberEverything()
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; CHECK-LABEL: define void @bar
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define void @bar() {
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; CHECK: 1 = MemoryDef(liveOnEntry)
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; CHECK-NEXT: call void @clobberEverything()
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call void @clobberEverything()
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br i1 undef, label %if.end, label %if.then
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if.then:
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; CHECK: MemoryUse(1)
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; CHECK-NEXT: call void @readEverything()
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call void @readEverything()
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; CHECK: 2 = MemoryDef(1)
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; CHECK-NEXT: call void @clobberEverything()
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call void @clobberEverything()
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br label %if.end
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if.end:
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; CHECK: 3 = MemoryPhi({%0,1},{if.then,2})
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; CHECK: MemoryUse(3)
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; CHECK-NEXT: call void @readEverything()
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call void @readEverything()
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ret void
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}
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