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| author | Meador Inge <meadori@codesourcery.com> | 2012-10-13 16:45:37 +0000 |
|---|---|---|
| committer | Meador Inge <meadori@codesourcery.com> | 2012-10-13 16:45:37 +0000 |
| commit | 174185084c2d7c8d7ef8762cdb3125ece6376ed0 (patch) | |
| tree | 231ca43e394f46a96384e6b2e67c8c68e543bb82 /llvm/test/Transforms/InstCombine/strchr-2.ll | |
| parent | 7fb2f7378bc2675baeaae9020b09ad3897da5bc5 (diff) | |
| download | bcm5719-llvm-174185084c2d7c8d7ef8762cdb3125ece6376ed0.tar.gz bcm5719-llvm-174185084c2d7c8d7ef8762cdb3125ece6376ed0.zip | |
instcombine: Migrate strchr and strrchr optimizations
This patch migrates the strchr and strrchr optimizations from the
simplify-libcalls pass into the instcombine library call simplifier.
llvm-svn: 165875
Diffstat (limited to 'llvm/test/Transforms/InstCombine/strchr-2.ll')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/strchr-2.ll | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/strchr-2.ll b/llvm/test/Transforms/InstCombine/strchr-2.ll new file mode 100644 index 00000000000..35bbd23e6d4 --- /dev/null +++ b/llvm/test/Transforms/InstCombine/strchr-2.ll @@ -0,0 +1,21 @@ +; Test that the strchr 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 [14 x i8] c"hello world\5Cn\00" +@chr = global i8 zeroinitializer + +declare i8 @strchr(i8*, i32) + +define void @test_nosimplify1() { +; CHECK: test_nosimplify1 +; CHECK: call i8 @strchr +; CHECK: ret void + + %str = getelementptr [14 x i8]* @hello, i32 0, i32 0 + %dst = call i8 @strchr(i8* %str, i32 119) + store i8 %dst, i8* @chr + ret void +} |
