https://github.com/Jolyon0202 created
https://github.com/llvm/llvm-project/pull/72624
Fix bug when emit null struct with attribute aligned(16) and ICE of debugbuild.
>From f0245b42534f423edaba45c2b3b2dffeb86e3074 Mon Sep 17 00:00:00 2001
From: Jian Yang <yangjia...@huawei.com>
Date: Wed, 15 Nov 2023 15:44:35 +0800
Subject: [PATCH] [clang] fix emitvaarg when struct is null
Fix bug when emit null struct with attribute aligned(16) and ICE of debugbuild.
---
clang/lib/CodeGen/Targets/AArch64.cpp | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/clang/lib/CodeGen/Targets/AArch64.cpp
b/clang/lib/CodeGen/Targets/AArch64.cpp
index be5145daa00b7f5..49dff102b7d554a 100644
--- a/clang/lib/CodeGen/Targets/AArch64.cpp
+++ b/clang/lib/CodeGen/Targets/AArch64.cpp
@@ -526,7 +526,7 @@ Address AArch64ABIInfo::EmitAAPCSVAArg(Address VAListAddr,
QualType Ty,
llvm::Type *BaseTy = CGF.ConvertType(Ty);
if (IsIndirect)
BaseTy = llvm::PointerType::getUnqual(BaseTy);
- else if (AI.getCoerceToType())
+ else if (AI.canHaveCoerceToType() && AI.getCoerceToType())
BaseTy = AI.getCoerceToType();
unsigned NumRegs = 1;
@@ -594,7 +594,7 @@ Address AArch64ABIInfo::EmitAAPCSVAArg(Address VAListAddr,
QualType Ty,
// Integer arguments may need to correct register alignment (for example a
// "struct { __int128 a; };" gets passed in x_2N, x_{2N+1}). In this case we
// align __gr_offs to calculate the potential address.
- if (!IsFPR && !IsIndirect && TyAlign.getQuantity() > 8) {
+ if (!IsFPR && !IsIndirect && TyAlign.getQuantity() > 8 && !TySize.isZero()) {
int Align = TyAlign.getQuantity();
reg_offs = CGF.Builder.CreateAdd(
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