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| author | Meador Inge <meadori@codesourcery.com> | 2012-11-11 06:22:40 +0000 |
|---|---|---|
| committer | Meador Inge <meadori@codesourcery.com> | 2012-11-11 06:22:40 +0000 |
| commit | d7cb600514a1d85e88ae873633bb42357babbc68 (patch) | |
| tree | 532962becd7eb5f9fb25faa9bcadc31efe893ae0 /test/Transforms/InstCombine/memmove-1.ll | |
| parent | 11b04b40f285c8dd2c9ae9b349c3877078eeee10 (diff) | |
| download | llvm-d7cb600514a1d85e88ae873633bb42357babbc68.tar.gz llvm-d7cb600514a1d85e88ae873633bb42357babbc68.tar.bz2 llvm-d7cb600514a1d85e88ae873633bb42357babbc68.tar.xz | |
instcombine: Migrate memmove optimizations
This patch migrates the memmove optimizations from the simplify-libcalls
pass into the instcombine library call simplifier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167687 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/InstCombine/memmove-1.ll')
| -rw-r--r-- | test/Transforms/InstCombine/memmove-1.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/memmove-1.ll b/test/Transforms/InstCombine/memmove-1.ll new file mode 100644 index 0000000000..53f2f116c7 --- /dev/null +++ b/test/Transforms/InstCombine/memmove-1.ll @@ -0,0 +1,17 @@ +; Test that the memmove library call simplifier works correctly. +; +; RUN: opt < %s -instcombine -S | FileCheck %s + +target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" + +declare i8* @memmove(i8*, i8*, i32) + +; Check memmove(mem1, mem2, size) -> llvm.memmove(mem1, mem2, size, 1). + +define i8* @test_simplify1(i8* %mem1, i8* %mem2, i32 %size) { +; CHECK: @test_simplify1 + %ret = call i8* @memmove(i8* %mem1, i8* %mem2, i32 %size) +; CHECK: call void @llvm.memmove + ret i8* %ret +; CHECK: ret i8* %mem1 +} |