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-rw-r--r--llvm/lib/Target/X86/X86MCInstLower.cpp15
1 files changed, 15 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86MCInstLower.cpp b/llvm/lib/Target/X86/X86MCInstLower.cpp
index a59ddb7e995..6887f2e4c04 100644
--- a/llvm/lib/Target/X86/X86MCInstLower.cpp
+++ b/llvm/lib/Target/X86/X86MCInstLower.cpp
@@ -1140,12 +1140,27 @@ void X86AsmPrinter::EmitInstruction(const MachineInstr *MI) {
EmitAndCountInstruction(MCInstBuilder(X86::CALLpcrel32)
.addExpr(MCSymbolRefExpr::create(PICBase, OutContext)));
+ const X86FrameLowering* FrameLowering =
+ MF->getSubtarget<X86Subtarget>().getFrameLowering();
+ bool hasFP = FrameLowering->hasFP(*MF);
+
+ bool NeedsDwarfCFI = MMI->usePreciseUnwindInfo();
+ int stackGrowth = -RI->getSlotSize();
+
+ if (NeedsDwarfCFI && !hasFP) {
+ OutStreamer->EmitCFIAdjustCfaOffset(-stackGrowth);
+ }
+
// Emit the label.
OutStreamer->EmitLabel(PICBase);
// popl $reg
EmitAndCountInstruction(MCInstBuilder(X86::POP32r)
.addReg(MI->getOperand(0).getReg()));
+
+ if (NeedsDwarfCFI && !hasFP) {
+ OutStreamer->EmitCFIAdjustCfaOffset(stackGrowth);
+ }
return;
}
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