diff options
| author | Chris Lattner <sabre@nondot.org> | 2011-01-02 23:04:14 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2011-01-02 23:04:14 +0000 |
| commit | cc9eab26b3867fa4a835deb518a6a606882e8f49 (patch) | |
| tree | e556543efc455fba8f299e7b7bd8e43b7167b948 /test/Transforms/EarlyCSE | |
| parent | 9fc5cdf77c812aaa80419036de27576d45894d0d (diff) | |
| download | external_llvm-cc9eab26b3867fa4a835deb518a6a606882e8f49.zip external_llvm-cc9eab26b3867fa4a835deb518a6a606882e8f49.tar.gz external_llvm-cc9eab26b3867fa4a835deb518a6a606882e8f49.tar.bz2 | |
Enhance earlycse to do CSE of casts, instsimplify and die.
Add a testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122715 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/EarlyCSE')
| -rw-r--r-- | test/Transforms/EarlyCSE/basic.ll | 21 | ||||
| -rw-r--r-- | test/Transforms/EarlyCSE/dg.exp | 3 |
2 files changed, 24 insertions, 0 deletions
diff --git a/test/Transforms/EarlyCSE/basic.ll b/test/Transforms/EarlyCSE/basic.ll new file mode 100644 index 0000000..d42f503 --- /dev/null +++ b/test/Transforms/EarlyCSE/basic.ll @@ -0,0 +1,21 @@ +; RUN: opt < %s -S -early-cse | FileCheck %s + + +; CHECK: @test1 +define void @test1(i8 %V, i32 *%P) { + %A = bitcast i64 42 to double ;; dead + %B = add i32 4, 19 ;; constant folds + store i32 %B, i32* %P + + ; CHECK-NEXT: store i32 23, i32* %P + + %C = zext i8 %V to i32 + %D = zext i8 %V to i32 ;; CSE + volatile store i32 %C, i32* %P + volatile store i32 %D, i32* %P + + ; CHECK-NEXT: %C = zext i8 %V to i32 + ; CHECK-NEXT: volatile store i32 %C + ; CHECK-NEXT: volatile store i32 %C + ret void +} diff --git a/test/Transforms/EarlyCSE/dg.exp b/test/Transforms/EarlyCSE/dg.exp new file mode 100644 index 0000000..de42dad --- /dev/null +++ b/test/Transforms/EarlyCSE/dg.exp @@ -0,0 +1,3 @@ +load_lib llvm.exp + +RunLLVMTests [lsort [glob -nocomplain $srcdir/$subdir/*.ll]] |