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| author | Meador Inge <meadori@codesourcery.com> | 2012-10-13 16:45:32 +0000 |
|---|---|---|
| committer | Meador Inge <meadori@codesourcery.com> | 2012-10-13 16:45:32 +0000 |
| commit | 7fb2f7378bc2675baeaae9020b09ad3897da5bc5 (patch) | |
| tree | 928817e33cda0b9456766f52b67a891413b0eeeb /llvm/test/Transforms/InstCombine/strcat-3.ll | |
| parent | df796f893ff8be3ad70ad3b0bfcef674d7acbd4b (diff) | |
| download | bcm5719-llvm-7fb2f7378bc2675baeaae9020b09ad3897da5bc5.tar.gz bcm5719-llvm-7fb2f7378bc2675baeaae9020b09ad3897da5bc5.zip | |
instcombine: Migrate strcat and strncat optimizations
This patch migrates the strcat and strncat optimizations from the
simplify-libcalls pass into the instcombine library call simplifier.
llvm-svn: 165874
Diffstat (limited to 'llvm/test/Transforms/InstCombine/strcat-3.ll')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/strcat-3.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/strcat-3.ll b/llvm/test/Transforms/InstCombine/strcat-3.ll new file mode 100644 index 00000000000..15aff2f1aa2 --- /dev/null +++ b/llvm/test/Transforms/InstCombine/strcat-3.ll @@ -0,0 +1,22 @@ +; Test that the strcat libcall 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" + +@hello = constant [6 x i8] c"hello\00" +@empty = constant [1 x i8] c"\00" +@a = common global [32 x i8] zeroinitializer, align 1 + +declare i16* @strcat(i8*, i8*) + +define void @test_nosimplify1() { +; CHECK: @test_nosimplify1 +; CHECK: call i16* @strcat +; CHECK: ret void + + %dst = getelementptr [32 x i8]* @a, i32 0, i32 0 + %src = getelementptr [6 x i8]* @hello, i32 0, i32 0 + call i16* @strcat(i8* %dst, i8* %src) + ret void +} |
