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| author | Chris Lattner <sabre@nondot.org> | 2008-12-13 18:47:40 +0000 |
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| committer | Chris Lattner <sabre@nondot.org> | 2008-12-13 18:47:40 +0000 |
| commit | 4f118f0a20413139f6da22628a28ecf1f39db0f1 (patch) | |
| tree | 3063f42b2f731ab838de820ff69a383e79729bbf /test/Transforms/GVN/calls-readonly.ll | |
| parent | c2f33f24afdba9813a202bb1b8f9ee5480863c69 (diff) | |
| download | llvm-4f118f0a20413139f6da22628a28ecf1f39db0f1.tar.gz llvm-4f118f0a20413139f6da22628a28ecf1f39db0f1.tar.bz2 llvm-4f118f0a20413139f6da22628a28ecf1f39db0f1.tar.xz | |
rename some tests to be more uniform in naming convention.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60988 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/GVN/calls-readonly.ll')
| -rw-r--r-- | test/Transforms/GVN/calls-readonly.ll | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/test/Transforms/GVN/calls-readonly.ll b/test/Transforms/GVN/calls-readonly.ll new file mode 100644 index 0000000000..723ef77492 --- /dev/null +++ b/test/Transforms/GVN/calls-readonly.ll @@ -0,0 +1,29 @@ +; RUN: llvm-as < %s | opt -basicaa -gvn | llvm-dis | grep {call.*strlen} | count 1 +; Should delete the second call to strlen even though the intervening strchr call exists. + +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" +target triple = "i386-apple-darwin7" + +define i8* @test(i8* %P, i8* %Q, i32 %x, i32 %y) nounwind readonly { +entry: + %0 = tail call i32 @strlen(i8* %P) nounwind readonly ; <i32> [#uses=2] + %1 = icmp eq i32 %0, 0 ; <i1> [#uses=1] + br i1 %1, label %bb, label %bb1 + +bb: ; preds = %entry + %2 = sdiv i32 %x, %y ; <i32> [#uses=1] + br label %bb1 + +bb1: ; preds = %bb, %entry + %x_addr.0 = phi i32 [ %2, %bb ], [ %x, %entry ] ; <i32> [#uses=1] + %3 = tail call i8* @strchr(i8* %Q, i32 97) nounwind readonly ; <i8*> [#uses=1] + %4 = tail call i32 @strlen(i8* %P) nounwind readonly ; <i32> [#uses=1] + %5 = add i32 %x_addr.0, %0 ; <i32> [#uses=1] + %.sum = sub i32 %5, %4 ; <i32> [#uses=1] + %6 = getelementptr i8* %3, i32 %.sum ; <i8*> [#uses=1] + ret i8* %6 +} + +declare i32 @strlen(i8*) nounwind readonly + +declare i8* @strchr(i8*, i32) nounwind readonly |