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llvm-mirror/test/Transforms/InstCombine/strstr-2.ll

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instcombine: Migrate strstr optimizations This patch migrates the strstr optimizations from the simplify-libcalls pass into the instcombine library call simplifier. llvm-svn: 167682
2012-11-11 04:51:48 +01:00
; Test that the strstr 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 = private constant [1 x i8] zeroinitializer
declare i8 @strstr(i8*, i8*)
define i8 @test_no_simplify1(i8* %str) {
Update Transforms tests to use CHECK-LABEL for easier debugging. No functionality change. This update was done with the following bash script: find test/Transforms -name "*.ll" | \ while read NAME; do echo "$NAME" if ! grep -q "^; *RUN: *llc" $NAME; then TEMP=`mktemp -t temp` cp $NAME $TEMP sed -n "s/^define [^@]*@\([A-Za-z0-9_]*\)(.*$/\1/p" < $NAME | \ while read FUNC; do sed -i '' "s/;\(.*\)\([A-Za-z0-9_]*\):\( *\)@$FUNC\([( ]*\)\$/;\1\2-LABEL:\3@$FUNC(/g" $TEMP done mv $TEMP $NAME fi done llvm-svn: 186268
2013-07-14 03:42:54 +02:00
; CHECK-LABEL: @test_no_simplify1(
instcombine: Migrate strstr optimizations This patch migrates the strstr optimizations from the simplify-libcalls pass into the instcombine library call simplifier. llvm-svn: 167682
2012-11-11 04:51:48 +01:00
%pat = getelementptr inbounds [1 x i8]* @null, i32 0, i32 0
%ret = call i8 @strstr(i8* %str, i8* %pat)
; CHECK-NEXT: call i8 @strstr
ret i8 %ret
; CHECK-NEXT: ret i8 %ret
}
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