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| author | George Burgess IV <george.burgess.iv@gmail.com> | 2016-02-02 22:46:49 +0000 |
|---|---|---|
| committer | George Burgess IV <george.burgess.iv@gmail.com> | 2016-02-02 22:46:49 +0000 |
| commit | e1100f533f0a48f55e80e1152b06f5deab5f9b30 (patch) | |
| tree | 2be2f081aed1e5aae7158c48f5ecaa630d7cb69d /llvm/test/Transforms/Util/MemorySSA/optimize-use.ll | |
| parent | b7571043f2267cbc9971955c2bd3eac724c2e062 (diff) | |
| download | bcm5719-llvm-e1100f533f0a48f55e80e1152b06f5deab5f9b30.tar.gz bcm5719-llvm-e1100f533f0a48f55e80e1152b06f5deab5f9b30.zip | |
This patch adds MemorySSA to LLVM.
Please see include/llvm/Transforms/Utils/MemorySSA.h for a description
of MemorySSA, and what it does.
Differential Revision: http://reviews.llvm.org/D7864
llvm-svn: 259595
Diffstat (limited to 'llvm/test/Transforms/Util/MemorySSA/optimize-use.ll')
| -rw-r--r-- | llvm/test/Transforms/Util/MemorySSA/optimize-use.ll | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/llvm/test/Transforms/Util/MemorySSA/optimize-use.ll b/llvm/test/Transforms/Util/MemorySSA/optimize-use.ll new file mode 100644 index 00000000000..fccdc6450b6 --- /dev/null +++ b/llvm/test/Transforms/Util/MemorySSA/optimize-use.ll @@ -0,0 +1,36 @@ +; RUN: opt -basicaa -print-memoryssa -analyze -verify-memoryssa < %s 2>&1 | FileCheck %s + +; Function Attrs: ssp uwtable +define i32 @main() { +entry: +; CHECK: 1 = MemoryDef(liveOnEntry) +; CHECK-NEXT: %call = call noalias i8* @_Znwm(i64 4) + %call = call noalias i8* @_Znwm(i64 4) + %0 = bitcast i8* %call to i32* +; CHECK: 2 = MemoryDef(1) +; CHECK-NEXT: %call1 = call noalias i8* @_Znwm(i64 4) + %call1 = call noalias i8* @_Znwm(i64 4) + %1 = bitcast i8* %call1 to i32* +; CHECK: 3 = MemoryDef(2) +; CHECK-NEXT: store i32 5, i32* %0, align 4 + store i32 5, i32* %0, align 4 +; CHECK: 4 = MemoryDef(3) +; CHECK-NEXT: store i32 7, i32* %1, align 4 + store i32 7, i32* %1, align 4 +; CHECK: MemoryUse(3) +; CHECK-NEXT: %2 = load i32, i32* %0, align 4 + %2 = load i32, i32* %0, align 4 +; CHECK: MemoryUse(4) +; CHECK-NEXT: %3 = load i32, i32* %1, align 4 + %3 = load i32, i32* %1, align 4 +; CHECK: MemoryUse(3) +; CHECK-NEXT: %4 = load i32, i32* %0, align 4 + %4 = load i32, i32* %0, align 4 +; CHECK: MemoryUse(4) +; CHECK-NEXT: %5 = load i32, i32* %1, align 4 + %5 = load i32, i32* %1, align 4 + %add = add nsw i32 %3, %5 + ret i32 %add +} + +declare noalias i8* @_Znwm(i64) |
