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llvm-mirror/test/Transforms/InstCombine/strpbrk-1.ll
Stephen Lin cf082ae903 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 01:42:54 +00:00

69 lines
1.8 KiB
LLVM

; Test that the strpbrk 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"
@hello = constant [12 x i8] c"hello world\00"
@w = constant [2 x i8] c"w\00"
@null = constant [1 x i8] zeroinitializer
declare i8* @strpbrk(i8*, i8*)
; Check strpbrk(s, "") -> NULL.
define i8* @test_simplify1(i8* %str) {
; CHECK-LABEL: @test_simplify1(
%pat = getelementptr [1 x i8]* @null, i32 0, i32 0
%ret = call i8* @strpbrk(i8* %str, i8* %pat)
ret i8* %ret
; CHECK-NEXT: ret i8* null
}
; Check strpbrk("", s) -> NULL.
define i8* @test_simplify2(i8* %pat) {
; CHECK-LABEL: @test_simplify2(
%str = getelementptr [1 x i8]* @null, i32 0, i32 0
%ret = call i8* @strpbrk(i8* %str, i8* %pat)
ret i8* %ret
; CHECK-NEXT: ret i8* null
}
; Check strpbrk(s1, s2), where s1 and s2 are constants.
define i8* @test_simplify3() {
; CHECK-LABEL: @test_simplify3(
%str = getelementptr [12 x i8]* @hello, i32 0, i32 0
%pat = getelementptr [2 x i8]* @w, i32 0, i32 0
%ret = call i8* @strpbrk(i8* %str, i8* %pat)
ret i8* %ret
; CHECK-NEXT: ret i8* getelementptr inbounds ([12 x i8]* @hello, i32 0, i32 6)
}
; Check strpbrk(s, "a") -> strchr(s, 'a').
define i8* @test_simplify4(i8* %str) {
; CHECK-LABEL: @test_simplify4(
%pat = getelementptr [2 x i8]* @w, i32 0, i32 0
%ret = call i8* @strpbrk(i8* %str, i8* %pat)
; CHECK-NEXT: [[VAR:%[a-z]+]] = call i8* @strchr(i8* %str, i32 119)
ret i8* %ret
; CHECK-NEXT: ret i8* [[VAR]]
}
; Check cases that shouldn't be simplified.
define i8* @test_no_simplify1(i8* %str, i8* %pat) {
; CHECK-LABEL: @test_no_simplify1(
%ret = call i8* @strpbrk(i8* %str, i8* %pat)
; CHECK-NEXT: %ret = call i8* @strpbrk(i8* %str, i8* %pat)
ret i8* %ret
; CHECK-NEXT: ret i8* %ret
}