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| author | Meador Inge <meadori@codesourcery.com> | 2012-11-26 03:10:07 +0000 |
|---|---|---|
| committer | Meador Inge <meadori@codesourcery.com> | 2012-11-26 03:10:07 +0000 |
| commit | 017bb750ab99b2ca54771fc86a6b2fed4ad90eec (patch) | |
| tree | 9d2d0e7563f4df87ed93464587b56f09313c9726 /test/Transforms | |
| parent | a0798ec3774de21f3ae3a7eba237e274e4c05ac3 (diff) | |
instcombine: Migrate isascii optimizations
This patch migrates the isascii optimizations from the simplify-libcalls
pass into the instcombine library call simplifier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168579 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms')
| -rw-r--r-- | test/Transforms/InstCombine/isascii-1.ll | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/isascii-1.ll b/test/Transforms/InstCombine/isascii-1.ll new file mode 100644 index 0000000000..2a413d89b4 --- /dev/null +++ b/test/Transforms/InstCombine/isascii-1.ll @@ -0,0 +1,32 @@ +; Test that the isascii library call 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" + +declare i32 @isascii(i32) + +; Check isascii(c) -> c <u 128. + +define i32 @test_simplify1() { +; CHECK: @test_simplify1 + %ret = call i32 @isascii(i32 127) + ret i32 %ret +; CHECK-NEXT: ret i32 1 +} + +define i32 @test_simplify2() { +; CHECK: @test_simplify2 + %ret = call i32 @isascii(i32 128) + ret i32 %ret +; CHECK-NEXT: ret i32 0 +} + +define i32 @test_simplify3(i32 %x) { +; CHECK: @test_simplify3 + %ret = call i32 @isascii(i32 %x) +; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp ult i32 %x, 128 +; CHECK-NEXT: [[ZEXT:%[a-z0-9]+]] = zext i1 [[CMP]] to i32 + ret i32 %ret +; CHECK-NEXT: ret i32 [[ZEXT]] +} |