[llvm] r228754 - X86: @llvm.frameaddress should defer to SelectionDAG for Win CFI

[David Majnemer]

Author: majnemer
Date: Tue Feb 10 16:00:34 2015
New Revision: 228754

URL: http://llvm.org/viewvc/llvm-project?rev=228754&view=rev
Log:
X86: @llvm.frameaddress should defer to SelectionDAG for Win CFI

Modified:
    llvm/trunk/lib/Target/X86/X86FastISel.cpp
    llvm/trunk/test/CodeGen/X86/frameaddr.ll

Modified: llvm/trunk/lib/Target/X86/X86FastISel.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86FastISel.cpp?rev=228754&r1=228753&r2=228754&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86FastISel.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86FastISel.cpp Tue Feb 10 16:00:34 2015
@@ -37,6 +37,7 @@
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/Operator.h"
+#include "llvm/MC/MCAsmInfo.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Target/TargetOptions.h"
 using namespace llvm;
@@ -2136,6 +2137,10 @@ bool X86FastISel::fastLowerIntrinsicCall
   switch (II->getIntrinsicID()) {
   default: return false;
   case Intrinsic::frameaddress: {
+    MachineFunction *MF = FuncInfo.MF;
+    if (MF->getTarget().getMCAsmInfo()->usesWindowsCFI())
+      return false;
+
     Type *RetTy = II->getCalledFunction()->getReturnType();
 
     MVT VT;
@@ -2153,11 +2158,11 @@ bool X86FastISel::fastLowerIntrinsicCall
 
     // This needs to be set before we call getPtrSizedFrameRegister, otherwise
     // we get the wrong frame register.
-    MachineFrameInfo *MFI = FuncInfo.MF->getFrameInfo();
+    MachineFrameInfo *MFI = MF->getFrameInfo();
     MFI->setFrameAddressIsTaken(true);
 
     const X86RegisterInfo *RegInfo = Subtarget->getRegisterInfo();
-    unsigned FrameReg = RegInfo->getPtrSizedFrameRegister(*(FuncInfo.MF));
+    unsigned FrameReg = RegInfo->getPtrSizedFrameRegister(*MF);
     assert(((FrameReg == X86::RBP && VT == MVT::i64) ||
             (FrameReg == X86::EBP && VT == MVT::i32)) &&
            "Invalid Frame Register!");

Modified: llvm/trunk/test/CodeGen/X86/frameaddr.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/frameaddr.ll?rev=228754&r1=228753&r2=228754&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/frameaddr.ll (original)
+++ llvm/trunk/test/CodeGen/X86/frameaddr.ll Tue Feb 10 16:00:34 2015
@@ -1,5 +1,6 @@
 ; RUN: llc < %s -march=x86                                | FileCheck %s --check-prefix=CHECK-32
 ; RUN: llc < %s -march=x86    -fast-isel -fast-isel-abort | FileCheck %s --check-prefix=CHECK-32
+; RUN: llc < %s -mtriple=x86_64-pc-win32 -fast-isel | FileCheck %s --check-prefix=CHECK-W64
 ; RUN: llc < %s -mtriple=x86_64-unknown                             | FileCheck %s --check-prefix=CHECK-64
 ; RUN: llc < %s -mtriple=x86_64-unknown -fast-isel -fast-isel-abort | FileCheck %s --check-prefix=CHECK-64
 ; RUN: llc < %s -mtriple=x86_64-gnux32                    | FileCheck %s --check-prefix=CHECK-X32ABI
@@ -15,6 +16,12 @@ entry:
 ; CHECK-32-NEXT:  movl %ebp, %eax
 ; CHECK-32-NEXT:  pop
 ; CHECK-32-NEXT:  ret
+; CHECK-W64-LABEL: test1
+; CHECK-W64:       push
+; CHECK-W64-NEXT:  leaq (%rsp), %rbp
+; CHECK-W64-NEXT:  leaq (%rbp), %rax
+; CHECK-W64-NEXT:  pop
+; CHECK-W64-NEXT:  ret
 ; CHECK-64-LABEL: test1
 ; CHECK-64:       push
 ; CHECK-64-NEXT:  movq %rsp, %rbp
@@ -44,6 +51,12 @@ entry:
 ; CHECK-32-NEXT:  movl (%eax), %eax
 ; CHECK-32-NEXT:  pop
 ; CHECK-32-NEXT:  ret
+; CHECK-W64-LABEL: test2
+; CHECK-W64:       push
+; CHECK-W64-NEXT:  leaq (%rsp), %rbp
+; CHECK-W64-NEXT:  leaq (%rbp), %rax
+; CHECK-W64-NEXT:  pop
+; CHECK-W64-NEXT:  ret
 ; CHECK-64-LABEL: test2
 ; CHECK-64:       push
 ; CHECK-64-NEXT:  movq %rsp, %rbp