llvm-6502/test/Transforms/InstSimplify/reassociate.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

196 lines
3.6 KiB
LLVM

; RUN: opt < %s -instsimplify -S | FileCheck %s
define i32 @add1(i32 %x) {
; CHECK-LABEL: @add1(
; (X + -1) + 1 -> X
%l = add i32 %x, -1
%r = add i32 %l, 1
ret i32 %r
; CHECK: ret i32 %x
}
define i32 @and1(i32 %x, i32 %y) {
; CHECK-LABEL: @and1(
; (X & Y) & X -> X & Y
%l = and i32 %x, %y
%r = and i32 %l, %x
ret i32 %r
; CHECK: ret i32 %l
}
define i32 @and2(i32 %x, i32 %y) {
; CHECK-LABEL: @and2(
; X & (X & Y) -> X & Y
%r = and i32 %x, %y
%l = and i32 %x, %r
ret i32 %l
; CHECK: ret i32 %r
}
define i32 @or1(i32 %x, i32 %y) {
; CHECK-LABEL: @or1(
; (X | Y) | X -> X | Y
%l = or i32 %x, %y
%r = or i32 %l, %x
ret i32 %r
; CHECK: ret i32 %l
}
define i32 @or2(i32 %x, i32 %y) {
; CHECK-LABEL: @or2(
; X | (X | Y) -> X | Y
%r = or i32 %x, %y
%l = or i32 %x, %r
ret i32 %l
; CHECK: ret i32 %r
}
define i32 @xor1(i32 %x, i32 %y) {
; CHECK-LABEL: @xor1(
; (X ^ Y) ^ X = Y
%l = xor i32 %x, %y
%r = xor i32 %l, %x
ret i32 %r
; CHECK: ret i32 %y
}
define i32 @xor2(i32 %x, i32 %y) {
; CHECK-LABEL: @xor2(
; X ^ (X ^ Y) = Y
%r = xor i32 %x, %y
%l = xor i32 %x, %r
ret i32 %l
; CHECK: ret i32 %y
}
define i32 @sub1(i32 %x, i32 %y) {
; CHECK-LABEL: @sub1(
%d = sub i32 %x, %y
%r = sub i32 %x, %d
ret i32 %r
; CHECK: ret i32 %y
}
define i32 @sub2(i32 %x) {
; CHECK-LABEL: @sub2(
; X - (X + 1) -> -1
%xp1 = add i32 %x, 1
%r = sub i32 %x, %xp1
ret i32 %r
; CHECK: ret i32 -1
}
define i32 @sub3(i32 %x, i32 %y) {
; CHECK-LABEL: @sub3(
; ((X + 1) + Y) - (Y + 1) -> X
%xp1 = add i32 %x, 1
%lhs = add i32 %xp1, %y
%rhs = add i32 %y, 1
%r = sub i32 %lhs, %rhs
ret i32 %r
; CHECK: ret i32 %x
}
define i32 @sdiv1(i32 %x, i32 %y) {
; CHECK-LABEL: @sdiv1(
; (no overflow X * Y) / Y -> X
%mul = mul nsw i32 %x, %y
%r = sdiv i32 %mul, %y
ret i32 %r
; CHECK: ret i32 %x
}
define i32 @sdiv2(i32 %x, i32 %y) {
; CHECK-LABEL: @sdiv2(
; (((X / Y) * Y) / Y) -> X / Y
%div = sdiv i32 %x, %y
%mul = mul i32 %div, %y
%r = sdiv i32 %mul, %y
ret i32 %r
; CHECK: ret i32 %div
}
define i32 @sdiv3(i32 %x, i32 %y) {
; CHECK-LABEL: @sdiv3(
; (X rem Y) / Y -> 0
%rem = srem i32 %x, %y
%div = sdiv i32 %rem, %y
ret i32 %div
; CHECK: ret i32 0
}
define i32 @sdiv4(i32 %x, i32 %y) {
; CHECK-LABEL: @sdiv4(
; (X / Y) * Y -> X if the division is exact
%div = sdiv exact i32 %x, %y
%mul = mul i32 %div, %y
ret i32 %mul
; CHECK: ret i32 %x
}
define i32 @sdiv5(i32 %x, i32 %y) {
; CHECK-LABEL: @sdiv5(
; Y * (X / Y) -> X if the division is exact
%div = sdiv exact i32 %x, %y
%mul = mul i32 %y, %div
ret i32 %mul
; CHECK: ret i32 %x
}
define i32 @udiv1(i32 %x, i32 %y) {
; CHECK-LABEL: @udiv1(
; (no overflow X * Y) / Y -> X
%mul = mul nuw i32 %x, %y
%r = udiv i32 %mul, %y
ret i32 %r
; CHECK: ret i32 %x
}
define i32 @udiv2(i32 %x, i32 %y) {
; CHECK-LABEL: @udiv2(
; (((X / Y) * Y) / Y) -> X / Y
%div = udiv i32 %x, %y
%mul = mul i32 %div, %y
%r = udiv i32 %mul, %y
ret i32 %r
; CHECK: ret i32 %div
}
define i32 @udiv3(i32 %x, i32 %y) {
; CHECK-LABEL: @udiv3(
; (X rem Y) / Y -> 0
%rem = urem i32 %x, %y
%div = udiv i32 %rem, %y
ret i32 %div
; CHECK: ret i32 0
}
define i32 @udiv4(i32 %x, i32 %y) {
; CHECK-LABEL: @udiv4(
; (X / Y) * Y -> X if the division is exact
%div = udiv exact i32 %x, %y
%mul = mul i32 %div, %y
ret i32 %mul
; CHECK: ret i32 %x
}
define i32 @udiv5(i32 %x, i32 %y) {
; CHECK-LABEL: @udiv5(
; Y * (X / Y) -> X if the division is exact
%div = udiv exact i32 %x, %y
%mul = mul i32 %y, %div
ret i32 %mul
; CHECK: ret i32 %x
}
define i16 @trunc1(i32 %x) {
; CHECK-LABEL: @trunc1(
%y = add i32 %x, 1
%tx = trunc i32 %x to i16
%ty = trunc i32 %y to i16
%d = sub i16 %ty, %tx
ret i16 %d
; CHECK: ret i16 1
}