mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-21 02:29:22 +00:00
b4dc0233c9
This was done with the following sed invocation to catch label lines demarking function boundaries:
sed -i '' "s/^;\( *\)\([A-Z0-9_]*\):\( *\)test\([A-Za-z0-9_-]*\):\( *\)$/;\1\2-LABEL:\3test\4:\5/g" test/CodeGen/*/*.ll
which was written conservatively to avoid false positives rather than false negatives. I scanned through all the changes and everything looks correct.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186258 91177308-0d34-0410-b5e6-96231b3b80d8
31 lines
896 B
LLVM
31 lines
896 B
LLVM
; RUN: llc < %s -march=x86 | FileCheck %s
|
|
|
|
; When doing sign extension, use the sext-load lowering to take advantage of
|
|
; x86's sign extension during loads.
|
|
;
|
|
; CHECK-LABEL: test1:
|
|
; CHECK: movsbl {{.*}}, %eax
|
|
; CHECK-NEXT: ret
|
|
define i32 @test1(i32 %X) nounwind {
|
|
entry:
|
|
%tmp12 = trunc i32 %X to i8 ; <i8> [#uses=1]
|
|
%tmp123 = sext i8 %tmp12 to i32 ; <i32> [#uses=1]
|
|
ret i32 %tmp123
|
|
}
|
|
|
|
; When using a sextload representation, ensure that the sign extension is
|
|
; preserved even when removing shifted-out low bits.
|
|
;
|
|
; CHECK-LABEL: test2:
|
|
; CHECK: movswl {{.*}}, %eax
|
|
; CHECK-NEXT: ret
|
|
define i32 @test2({i16, [6 x i8]}* %this) {
|
|
entry:
|
|
%b48 = getelementptr inbounds { i16, [6 x i8] }* %this, i32 0, i32 1
|
|
%cast = bitcast [6 x i8]* %b48 to i48*
|
|
%bf.load = load i48* %cast, align 2
|
|
%bf.ashr = ashr i48 %bf.load, 32
|
|
%bf.cast = trunc i48 %bf.ashr to i32
|
|
ret i32 %bf.cast
|
|
}
|