llvm/test/Transforms/InstCombine/2008-11-20-DivMulRem.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

68 lines
1.2 KiB
LLVM

; RUN: opt < %s -instcombine -S | FileCheck %s
; PR3103
define i8 @test1(i8 %x, i8 %y) {
; CHECK-LABEL: @test1(
%A = udiv i8 %x, %y
; CHECK-NEXT: urem
%B = mul i8 %A, %y
%C = sub i8 %x, %B
ret i8 %C
; CHECK-NEXT: ret
}
define i8 @test2(i8 %x, i8 %y) {
; CHECK-LABEL: @test2(
%A = sdiv i8 %x, %y
; CHECK-NEXT: srem
%B = mul i8 %A, %y
%C = sub i8 %x, %B
ret i8 %C
; CHECK-NEXT: ret
}
define i8 @test3(i8 %x, i8 %y) {
; CHECK-LABEL: @test3(
%A = udiv i8 %x, %y
; CHECK-NEXT: urem
%B = mul i8 %A, %y
%C = sub i8 %B, %x
; CHECK-NEXT: sub
ret i8 %C
; CHECK-NEXT: ret
}
define i8 @test4(i8 %x) {
; CHECK-LABEL: @test4(
%A = udiv i8 %x, 3
; CHECK-NEXT: urem
%B = mul i8 %A, -3
; CHECK-NEXT: sub
%C = sub i8 %x, %B
; CHECK-NEXT: add
ret i8 %C
; CHECK-NEXT: ret
}
define i32 @test5(i32 %x, i32 %y) {
; CHECK-LABEL: @test5(
; (((X / Y) * Y) / Y) -> X / Y
%div = sdiv i32 %x, %y
; CHECK-NEXT: sdiv
%mul = mul i32 %div, %y
%r = sdiv i32 %mul, %y
ret i32 %r
; CHECK-NEXT: ret
}
define i32 @test6(i32 %x, i32 %y) {
; CHECK-LABEL: @test6(
; (((X / Y) * Y) / Y) -> X / Y
%div = udiv i32 %x, %y
; CHECK-NEXT: udiv
%mul = mul i32 %div, %y
%r = udiv i32 %mul, %y
ret i32 %r
; CHECK-NEXT: ret
}