mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-31 07:52:55 +01:00
cf082ae903
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
135 lines
3.2 KiB
LLVM
135 lines
3.2 KiB
LLVM
; This test makes sure that div instructions are properly eliminated.
|
|
|
|
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
|
|
define i32 @test1(i32 %A) {
|
|
%B = sdiv i32 %A, 1 ; <i32> [#uses=1]
|
|
ret i32 %B
|
|
; CHECK-LABEL: @test1(
|
|
; CHECK-NEXT: ret i32 %A
|
|
}
|
|
|
|
define i32 @test2(i32 %A) {
|
|
; => Shift
|
|
%B = udiv i32 %A, 8 ; <i32> [#uses=1]
|
|
ret i32 %B
|
|
; CHECK-LABEL: @test2(
|
|
; CHECK-NEXT: lshr i32 %A, 3
|
|
}
|
|
|
|
define i32 @test3(i32 %A) {
|
|
; => 0, don't need to keep traps
|
|
%B = sdiv i32 0, %A ; <i32> [#uses=1]
|
|
ret i32 %B
|
|
; CHECK-LABEL: @test3(
|
|
; CHECK-NEXT: ret i32 0
|
|
}
|
|
|
|
define i32 @test4(i32 %A) {
|
|
; 0-A
|
|
%B = sdiv i32 %A, -1 ; <i32> [#uses=1]
|
|
ret i32 %B
|
|
; CHECK-LABEL: @test4(
|
|
; CHECK-NEXT: sub i32 0, %A
|
|
}
|
|
|
|
define i32 @test5(i32 %A) {
|
|
%B = udiv i32 %A, -16 ; <i32> [#uses=1]
|
|
%C = udiv i32 %B, -4 ; <i32> [#uses=1]
|
|
ret i32 %C
|
|
; CHECK-LABEL: @test5(
|
|
; CHECK-NEXT: ret i32 0
|
|
}
|
|
|
|
define i1 @test6(i32 %A) {
|
|
%B = udiv i32 %A, 123 ; <i32> [#uses=1]
|
|
; A < 123
|
|
%C = icmp eq i32 %B, 0 ; <i1> [#uses=1]
|
|
ret i1 %C
|
|
; CHECK-LABEL: @test6(
|
|
; CHECK-NEXT: icmp ult i32 %A, 123
|
|
}
|
|
|
|
define i1 @test7(i32 %A) {
|
|
%B = udiv i32 %A, 10 ; <i32> [#uses=1]
|
|
; A >= 20 && A < 30
|
|
%C = icmp eq i32 %B, 2 ; <i1> [#uses=1]
|
|
ret i1 %C
|
|
; CHECK-LABEL: @test7(
|
|
; CHECK-NEXT: add i32 %A, -20
|
|
; CHECK-NEXT: icmp ult i32
|
|
}
|
|
|
|
define i1 @test8(i8 %A) {
|
|
%B = udiv i8 %A, 123 ; <i8> [#uses=1]
|
|
; A >= 246
|
|
%C = icmp eq i8 %B, 2 ; <i1> [#uses=1]
|
|
ret i1 %C
|
|
; CHECK-LABEL: @test8(
|
|
; CHECK-NEXT: icmp ugt i8 %A, -11
|
|
}
|
|
|
|
define i1 @test9(i8 %A) {
|
|
%B = udiv i8 %A, 123 ; <i8> [#uses=1]
|
|
; A < 246
|
|
%C = icmp ne i8 %B, 2 ; <i1> [#uses=1]
|
|
ret i1 %C
|
|
; CHECK-LABEL: @test9(
|
|
; CHECK-NEXT: icmp ult i8 %A, -10
|
|
}
|
|
|
|
define i32 @test10(i32 %X, i1 %C) {
|
|
%V = select i1 %C, i32 64, i32 8 ; <i32> [#uses=1]
|
|
%R = udiv i32 %X, %V ; <i32> [#uses=1]
|
|
ret i32 %R
|
|
; CHECK-LABEL: @test10(
|
|
; CHECK-NEXT: select i1 %C, i32 6, i32 3
|
|
; CHECK-NEXT: lshr i32 %X
|
|
}
|
|
|
|
define i32 @test11(i32 %X, i1 %C) {
|
|
%A = select i1 %C, i32 1024, i32 32 ; <i32> [#uses=1]
|
|
%B = udiv i32 %X, %A ; <i32> [#uses=1]
|
|
ret i32 %B
|
|
; CHECK-LABEL: @test11(
|
|
; CHECK-NEXT: select i1 %C, i32 10, i32 5
|
|
; CHECK-NEXT: lshr i32 %X
|
|
}
|
|
|
|
; PR2328
|
|
define i32 @test12(i32 %x) nounwind {
|
|
%tmp3 = udiv i32 %x, %x ; 1
|
|
ret i32 %tmp3
|
|
; CHECK-LABEL: @test12(
|
|
; CHECK-NEXT: ret i32 1
|
|
}
|
|
|
|
define i32 @test13(i32 %x) nounwind {
|
|
%tmp3 = sdiv i32 %x, %x ; 1
|
|
ret i32 %tmp3
|
|
; CHECK-LABEL: @test13(
|
|
; CHECK-NEXT: ret i32 1
|
|
}
|
|
|
|
define i32 @test14(i8 %x) nounwind {
|
|
%zext = zext i8 %x to i32
|
|
%div = udiv i32 %zext, 257 ; 0
|
|
ret i32 %div
|
|
; CHECK-LABEL: @test14(
|
|
; CHECK-NEXT: ret i32 0
|
|
}
|
|
|
|
; PR9814
|
|
define i32 @test15(i32 %a, i32 %b) nounwind {
|
|
%shl = shl i32 1, %b
|
|
%div = lshr i32 %shl, 2
|
|
%div2 = udiv i32 %a, %div
|
|
ret i32 %div2
|
|
; CHECK-LABEL: @test15(
|
|
; CHECK-NEXT: add i32 %b, -2
|
|
; CHECK-NEXT: lshr i32 %a,
|
|
; CHECK-NEXT: ret i32
|
|
}
|
|
|
|
|