TotalNumXMMRegs = 0;
if (IsWin64) {
+ const TargetFrameInfo &TFI = *getTargetMachine().getFrameInfo();
+ // Get to the caller-allocated home save location. Add 8 to account
+ // for the return address.
+ int HomeOffset = TFI.getOffsetOfLocalArea() + 8;
FuncInfo->setRegSaveFrameIndex(
- MFI->CreateFixedObject(1, NumIntRegs * 8, false));
+ MFI->CreateFixedObject(1, NumIntRegs * 8 + HomeOffset, false));
FuncInfo->setVarArgsFrameIndex(FuncInfo->getRegSaveFrameIndex());
} else {
// For X86-64, if there are vararg parameters that are passed via
Subtarget(TT, FS, is64Bit),
FrameInfo(TargetFrameInfo::StackGrowsDown,
Subtarget.getStackAlignment(),
- Subtarget.is64Bit() ? -8 : -4),
+ (Subtarget.isTargetWin64() ? -40 :
+ (Subtarget.is64Bit() ? -8 : -4))),
ELFWriterInfo(is64Bit, true) {
DefRelocModel = getRelocationModel();
--- /dev/null
+; RUN: llc < %s -mtriple=x86_64-pc-win32 | FileCheck %s
+
+; Verify that the 5th and 6th parameters are coming from the correct location
+; on the stack.
+define i32 @f6(i32 %p1, i32 %p2, i32 %p3, i32 %p4, i32 %p5, i32 %p6) nounwind readnone optsize {
+entry:
+; CHECK: movl 80(%rsp), %eax
+; CHECK: addl 72(%rsp), %eax
+ %add = add nsw i32 %p6, %p5
+ ret i32 %add
+}