mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-21 00:32:23 +00:00
cc455dea0f
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15427 91177308-0d34-0410-b5e6-96231b3b80d8
20 lines
652 B
LLVM
20 lines
652 B
LLVM
; The loop sinker was running from the bottom of the loop to the top, causing
|
|
; it to miss opportunities to sink instructions that depended on sinking other
|
|
; instructions from the loop. Instead they got hoisted, which is better than
|
|
; leaving them in the loop, but increases register pressure pointlessly.
|
|
|
|
; RUN: llvm-as < %s | opt -licm | llvm-dis | %prcontext getelementptr 1 | grep Out:
|
|
|
|
%Ty = type { int, int }
|
|
%X = external global %Ty
|
|
|
|
int %test() {
|
|
br label %Loop
|
|
Loop:
|
|
%dead = getelementptr %Ty* %X, long 0, ubyte 0
|
|
%sunk2 = load int* %dead
|
|
br bool false, label %Loop, label %Out
|
|
Out:
|
|
ret int %sunk2
|
|
}
|