mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-22 04:22:57 +02:00
80aaccb987
node which has a flag. That flag in turn was used by an already-selected adde which turned into an ADC32ri8 which used a selected load which was chained to the load we folded. This flag use caused us to form a cycle. Fix this by not ignoring chains in IsLegalToFold even in cases where the isel thinks it can. llvm-svn: 97791
21 lines
822 B
LLVM
21 lines
822 B
LLVM
; RUN: llc -march=x86 %s -o -
|
|
; RUN: llc -march=x86-64 %s -o -
|
|
|
|
; PR6497
|
|
|
|
; Chain and flag folding issues.
|
|
define i32 @test1() nounwind ssp {
|
|
entry:
|
|
%tmp5.i = volatile load i32* undef ; <i32> [#uses=1]
|
|
%conv.i = zext i32 %tmp5.i to i64 ; <i64> [#uses=1]
|
|
%tmp12.i = volatile load i32* undef ; <i32> [#uses=1]
|
|
%conv13.i = zext i32 %tmp12.i to i64 ; <i64> [#uses=1]
|
|
%shl.i = shl i64 %conv13.i, 32 ; <i64> [#uses=1]
|
|
%or.i = or i64 %shl.i, %conv.i ; <i64> [#uses=1]
|
|
%add16.i = add i64 %or.i, 256 ; <i64> [#uses=1]
|
|
%shr.i = lshr i64 %add16.i, 8 ; <i64> [#uses=1]
|
|
%conv19.i = trunc i64 %shr.i to i32 ; <i32> [#uses=1]
|
|
volatile store i32 %conv19.i, i32* undef
|
|
ret i32 undef
|
|
}
|