mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-26 05:32:25 +00:00
39f4e8d9cc
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
122 lines
2.6 KiB
LLVM
122 lines
2.6 KiB
LLVM
; RUN: opt < %s -S -early-cse | FileCheck %s
|
|
|
|
|
|
; CHECK-LABEL: @test1(
|
|
define void @test1(i8 %V, i32 *%P) {
|
|
%A = bitcast i64 42 to double ;; dead
|
|
%B = add i32 4, 19 ;; constant folds
|
|
store i32 %B, i32* %P
|
|
; CHECK-NEXT: store i32 23, i32* %P
|
|
|
|
%C = zext i8 %V to i32
|
|
%D = zext i8 %V to i32 ;; CSE
|
|
store volatile i32 %C, i32* %P
|
|
store volatile i32 %D, i32* %P
|
|
; CHECK-NEXT: %C = zext i8 %V to i32
|
|
; CHECK-NEXT: store volatile i32 %C
|
|
; CHECK-NEXT: store volatile i32 %C
|
|
|
|
%E = add i32 %C, %C
|
|
%F = add i32 %C, %C
|
|
store volatile i32 %E, i32* %P
|
|
store volatile i32 %F, i32* %P
|
|
; CHECK-NEXT: %E = add i32 %C, %C
|
|
; CHECK-NEXT: store volatile i32 %E
|
|
; CHECK-NEXT: store volatile i32 %E
|
|
|
|
%G = add nuw i32 %C, %C ;; not a CSE with E
|
|
store volatile i32 %G, i32* %P
|
|
; CHECK-NEXT: %G = add nuw i32 %C, %C
|
|
; CHECK-NEXT: store volatile i32 %G
|
|
ret void
|
|
}
|
|
|
|
|
|
;; Simple load value numbering.
|
|
; CHECK-LABEL: @test2(
|
|
define i32 @test2(i32 *%P) {
|
|
%V1 = load i32* %P
|
|
%V2 = load i32* %P
|
|
%Diff = sub i32 %V1, %V2
|
|
ret i32 %Diff
|
|
; CHECK: ret i32 0
|
|
}
|
|
|
|
;; Cross block load value numbering.
|
|
; CHECK-LABEL: @test3(
|
|
define i32 @test3(i32 *%P, i1 %Cond) {
|
|
%V1 = load i32* %P
|
|
br i1 %Cond, label %T, label %F
|
|
T:
|
|
store i32 4, i32* %P
|
|
ret i32 42
|
|
F:
|
|
%V2 = load i32* %P
|
|
%Diff = sub i32 %V1, %V2
|
|
ret i32 %Diff
|
|
; CHECK: F:
|
|
; CHECK: ret i32 0
|
|
}
|
|
|
|
;; Cross block load value numbering stops when stores happen.
|
|
; CHECK-LABEL: @test4(
|
|
define i32 @test4(i32 *%P, i1 %Cond) {
|
|
%V1 = load i32* %P
|
|
br i1 %Cond, label %T, label %F
|
|
T:
|
|
ret i32 42
|
|
F:
|
|
; Clobbers V1
|
|
store i32 42, i32* %P
|
|
|
|
%V2 = load i32* %P
|
|
%Diff = sub i32 %V1, %V2
|
|
ret i32 %Diff
|
|
; CHECK: F:
|
|
; CHECK: ret i32 %Diff
|
|
}
|
|
|
|
declare i32 @func(i32 *%P) readonly
|
|
|
|
;; Simple call CSE'ing.
|
|
; CHECK-LABEL: @test5(
|
|
define i32 @test5(i32 *%P) {
|
|
%V1 = call i32 @func(i32* %P)
|
|
%V2 = call i32 @func(i32* %P)
|
|
%Diff = sub i32 %V1, %V2
|
|
ret i32 %Diff
|
|
; CHECK: ret i32 0
|
|
}
|
|
|
|
;; Trivial Store->load forwarding
|
|
; CHECK-LABEL: @test6(
|
|
define i32 @test6(i32 *%P) {
|
|
store i32 42, i32* %P
|
|
%V1 = load i32* %P
|
|
ret i32 %V1
|
|
; CHECK: ret i32 42
|
|
}
|
|
|
|
;; Trivial dead store elimination.
|
|
; CHECK-LABEL: @test7(
|
|
define void @test7(i32 *%P) {
|
|
store i32 42, i32* %P
|
|
store i32 45, i32* %P
|
|
ret void
|
|
; CHECK-NEXT: store i32 45
|
|
; CHECK-NEXT: ret void
|
|
}
|
|
|
|
;; Readnone functions aren't invalidated by stores.
|
|
; CHECK-LABEL: @test8(
|
|
define i32 @test8(i32 *%P) {
|
|
%V1 = call i32 @func(i32* %P) readnone
|
|
store i32 4, i32* %P
|
|
%V2 = call i32 @func(i32* %P) readnone
|
|
%Diff = sub i32 %V1, %V2
|
|
ret i32 %Diff
|
|
; CHECK: ret i32 0
|
|
}
|
|
|
|
|