diff options
| -rw-r--r-- | clang/lib/CodeGen/TargetInfo.cpp | 5 | ||||
| -rw-r--r-- | clang/test/CodeGen/ppc-varargs-struct.c | 2 |
2 files changed, 6 insertions, 1 deletions
diff --git a/clang/lib/CodeGen/TargetInfo.cpp b/clang/lib/CodeGen/TargetInfo.cpp index bbc6b3b1ae2..8a5cc6c3df8 100644 --- a/clang/lib/CodeGen/TargetInfo.cpp +++ b/clang/lib/CodeGen/TargetInfo.cpp @@ -3505,6 +3505,7 @@ public: Address PPC32_SVR4_ABIInfo::EmitVAArg(CodeGenFunction &CGF, Address VAList, QualType Ty) const { + const unsigned OverflowLimit = 8; if (const ComplexType *CTy = Ty->getAs<ComplexType>()) { // TODO: Implement this. For now ignore. (void)CTy; @@ -3547,7 +3548,7 @@ Address PPC32_SVR4_ABIInfo::EmitVAArg(CodeGenFunction &CGF, Address VAList, } llvm::Value *CC = - Builder.CreateICmpULT(NumRegs, Builder.getInt8(8), "cond"); + Builder.CreateICmpULT(NumRegs, Builder.getInt8(OverflowLimit), "cond"); llvm::BasicBlock *UsingRegs = CGF.createBasicBlock("using_regs"); llvm::BasicBlock *UsingOverflow = CGF.createBasicBlock("using_overflow"); @@ -3599,6 +3600,8 @@ Address PPC32_SVR4_ABIInfo::EmitVAArg(CodeGenFunction &CGF, Address VAList, { CGF.EmitBlock(UsingOverflow); + Builder.CreateStore(Builder.getInt8(OverflowLimit), NumRegsAddr); + // Everything in the overflow area is rounded up to a size of at least 4. CharUnits OverflowAreaAlign = CharUnits::fromQuantity(4); diff --git a/clang/test/CodeGen/ppc-varargs-struct.c b/clang/test/CodeGen/ppc-varargs-struct.c index 1ad57c26b48..d7936a12696 100644 --- a/clang/test/CodeGen/ppc-varargs-struct.c +++ b/clang/test/CodeGen/ppc-varargs-struct.c @@ -37,6 +37,7 @@ void testva (int n, ...) // CHECK-PPC-NEXT: br label %[[CONT:[a-z0-9]+]] // // CHECK-PPC:[[USING_OVERFLOW]] +// CHECK-PPC-NEXT: store i8 8, i8* [[GPRPTR]], align 4 // CHECK-PPC-NEXT: [[OVERFLOW_AREA_P:%[0-9]+]] = getelementptr inbounds %struct.__va_list_tag, %struct.__va_list_tag* [[ARRAYDECAY]], i32 0, i32 3 // CHECK-PPC-NEXT: [[OVERFLOW_AREA:%.+]] = load i8*, i8** [[OVERFLOW_AREA_P]], align 4 // CHECK-PPC-NEXT: %{{[0-9]+}} = ptrtoint i8* %argp.cur to i32 @@ -76,6 +77,7 @@ void testva (int n, ...) // CHECK-PPC-NEXT: br label %[[CONT:[a-z0-9]+]] // // CHECK-PPC:[[USING_OVERFLOW]] +// CHECK-PPC-NEXT: store i8 8, i8* [[GPRPTR]], align 4 // CHECK-PPC-NEXT: [[OVERFLOW_AREA_P:%[0-9]+]] = getelementptr inbounds %struct.__va_list_tag, %struct.__va_list_tag* [[ARRAYDECAY]], i32 0, i32 3 // CHECK-PPC-NEXT: [[OVERFLOW_AREA:%.+]] = load i8*, i8** [[OVERFLOW_AREA_P]], align 4 // CHECK-PPC-NEXT: [[MEMADDR:%.+]] = bitcast i8* [[OVERFLOW_AREA]] to i32* |
