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| author | Meador Inge <meadori@codesourcery.com> | 2012-11-10 15:16:48 +0000 |
|---|---|---|
| committer | Meador Inge <meadori@codesourcery.com> | 2012-11-10 15:16:48 +0000 |
| commit | 5464ee7eaaf490444589d8716ae529827e29aa9b (patch) | |
| tree | 3ed96c525ff2322c44fd065db57405a72435c544 /test/Transforms/InstCombine/strcspn-2.ll | |
| parent | 79949597b281f0fd757bc11178e39887d0ba9735 (diff) | |
| download | llvm-5464ee7eaaf490444589d8716ae529827e29aa9b.tar.gz llvm-5464ee7eaaf490444589d8716ae529827e29aa9b.tar.bz2 llvm-5464ee7eaaf490444589d8716ae529827e29aa9b.tar.xz | |
instcombine: Migrate strcspn optimizations
This patch migrates the strcspn optimizations from the simplify-libcalls
pass into the instcombine library call simplifier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167675 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/InstCombine/strcspn-2.ll')
| -rw-r--r-- | test/Transforms/InstCombine/strcspn-2.ll | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/strcspn-2.ll b/test/Transforms/InstCombine/strcspn-2.ll new file mode 100644 index 0000000000..4e2393686c --- /dev/null +++ b/test/Transforms/InstCombine/strcspn-2.ll @@ -0,0 +1,21 @@ +; Test that the strcspn library call simplifier works correctly. +; +; RUN: opt < %s -instcombine -S | FileCheck %s + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" + +@null = constant [1 x i8] zeroinitializer + +declare double @strcspn(i8*, i8*) + +; Check that strcspn functions with the wrong prototype aren't simplified. + +define double @test_no_simplify1(i8* %pat) { +; CHECK: @test_no_simplify1 + %str = getelementptr [1 x i8]* @null, i32 0, i32 0 + + %ret = call double @strcspn(i8* %str, i8* %pat) +; CHECK-NEXT: call double @strcspn + ret double %ret +; CHECK-NEXT: ret double %ret +} |