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[AArch64] Fix Local Deallocation for Homogeneous Prolog/Epilog

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The stack adjustment for local deallocation was incorrectly ported.

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D106760
This commit is contained in:
Kyungwoo Lee 2021-07-25 10:50:39 -07:00
parent 4b99bcdef6
commit e13913351b
2 changed files with 22 additions and 1 deletions
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2
lib/Target/AArch64/AArch64FrameLowering.cpp
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@ -1738,7 +1738,7 @@ void AArch64FrameLowering::emitEpilogue(MachineFunction &MF,
// Adjust local stack
emitFrameOffset(MBB, LastPopI, DL, AArch64::SP, AArch64::SP,
StackOffset::getFixed(-AFI->getLocalStackSize()), TII,
StackOffset::getFixed(AFI->getLocalStackSize()), TII,
MachineInstr::FrameDestroy, false, NeedsWinCFI);
// SP has been already adjusted while restoring callee save regs.

21
test/CodeGen/AArch64/arm64-homogeneous-prolog-epilog.ll
View File

@ -29,6 +29,27 @@ define i32 @_Z3hooii(i32 %b, i32 %a) nounwind ssp minsize {
declare i32 @_Z3gooi(i32);
; CHECK-LABEL: _foo:
; CHECK: sub sp, sp, #16
; CHECK: bl _goo
; CHECK: add sp, sp, #16
define i32 @foo(i32 %c) nounwind minsize {
entry:
%buffer = alloca [1 x i32], align 4
%0 = bitcast [1 x i32]* %buffer to i8*
call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %0)
%arraydecay = getelementptr inbounds [1 x i32], [1 x i32]* %buffer, i64 0, i64 0
%call = call i32 @goo(i32* nonnull %arraydecay)
%sub = sub nsw i32 %c, %call
call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %0)
ret i32 %sub
}
declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture)
declare i32 @goo(i32*)
declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture)
; CHECK-LABEL: _OUTLINED_FUNCTION_PROLOG_x30x29x19x20x21x22:
; CHECK: stp x22, x21, [sp, #-32]!