llvm-6502/test/Transforms/InstCombine/strcspn-1.ll
Stephen Lin 39f4e8d9cc 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186268 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-14 01:42:54 +00:00

58 lines
1.6 KiB
LLVM

; Test that the strcspn 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"
@abcba = constant [6 x i8] c"abcba\00"
@abc = constant [4 x i8] c"abc\00"
@null = constant [1 x i8] zeroinitializer
declare i64 @strcspn(i8*, i8*)
; Check strcspn(s, "") -> strlen(s).
define i64 @test_simplify1(i8* %str) {
; CHECK-LABEL: @test_simplify1(
%pat = getelementptr [1 x i8]* @null, i32 0, i32 0
%ret = call i64 @strcspn(i8* %str, i8* %pat)
; CHECK-NEXT: [[VAR:%[a-z]+]] = call i64 @strlen(i8* %str)
ret i64 %ret
; CHECK-NEXT: ret i64 [[VAR]]
}
; Check strcspn("", s) -> 0.
define i64 @test_simplify2(i8* %pat) {
; CHECK-LABEL: @test_simplify2(
%str = getelementptr [1 x i8]* @null, i32 0, i32 0
%ret = call i64 @strcspn(i8* %str, i8* %pat)
ret i64 %ret
; CHECK-NEXT: ret i64 0
}
; Check strcspn(s1, s2), where s1 and s2 are constants.
define i64 @test_simplify3() {
; CHECK-LABEL: @test_simplify3(
%str = getelementptr [6 x i8]* @abcba, i32 0, i32 0
%pat = getelementptr [4 x i8]* @abc, i32 0, i32 0
%ret = call i64 @strcspn(i8* %str, i8* %pat)
ret i64 %ret
; CHECK-NEXT: ret i64 0
}
; Check cases that shouldn't be simplified.
define i64 @test_no_simplify1(i8* %str, i8* %pat) {
; CHECK-LABEL: @test_no_simplify1(
%ret = call i64 @strcspn(i8* %str, i8* %pat)
; CHECK-NEXT: %ret = call i64 @strcspn(i8* %str, i8* %pat)
ret i64 %ret
; CHECK-NEXT: ret i64 %ret
}