llvm-6502/test/Transforms/InstCombine/strchr-2.ll
Meador Inge 186f8d90df 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165875 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-13 16:45:37 +00:00

22 lines
608 B
LLVM

; 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
}