Make 80-bit store maintain simulated FP stack correctly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40868 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86FloatingPoint.cpp b/lib/Target/X86/X86FloatingPoint.cpp
index e481406d11d9c6a906fd0a7c3ced5dd0deacc41b..ebf4a5756f5adebfd8cb023ce2540f007b068e8f 100644 (file)
--- a/lib/Target/X86/X86FloatingPoint.cpp
+++ b/lib/Target/X86/X86FloatingPoint.cpp
@@ -629,7 +629,8 @@ void FPS::handleOneArgFP(MachineBasicBlock::iterator &I) {
   if (MI->getOpcode() == X86::IST_FP64m ||
       MI->getOpcode() == X86::ISTT_FP16m ||
       MI->getOpcode() == X86::ISTT_FP32m ||
-      MI->getOpcode() == X86::ISTT_FP64m) {
+      MI->getOpcode() == X86::ISTT_FP64m ||
+      MI->getOpcode() == X86::ST_FP80m) {
     assert(StackTop > 0 && "Stack empty??");
     --StackTop;
   } else if (KillsSrc) { // Last use of operand?