[llvm] No inline stackprobe for UEFI

UEFI targets must be excluded from inline stack probes.

Author: Prabhuk

llvm/lib/Target/X86/X86ISelLowering.cpp

@@ -62039,7 +62039,7 @@ bool X86TargetLowering::hasStackProbeSymbol(const MachineFunction &MF) const {
 bool X86TargetLowering::hasInlineStackProbe(const MachineFunction &MF) const {
 
   // No inline stack probe for Windows, they have their own mechanism.
-  if (Subtarget.isOSWindows() ||
+  if (Subtarget.isOSWindows() || Subtarget.isUEFI() ||
       MF.getFunction().hasFnAttribute("no-stack-arg-probe"))
     return false;
 
@@ -62065,7 +62065,8 @@ X86TargetLowering::getStackProbeSymbolName(const MachineFunction &MF) const {
 
   // Generally, if we aren't on Windows, the platform ABI does not include
   // support for stack probes, so don't emit them.
-  if (!Subtarget.isOSWindows() || Subtarget.isTargetMachO() ||
+  if ((!Subtarget.isOSWindows() && !Subtarget.isUEFI()) ||
+      Subtarget.isTargetMachO() ||
       MF.getFunction().hasFnAttribute("no-stack-arg-probe"))
     return "";
 

llvm/test/CodeGen/X86/movtopush.ll

@@ -1,6 +1,7 @@
 ; RUN: llc < %s -mtriple=i686-windows | FileCheck %s -check-prefix=NORMAL
 ; RUN: llc < %s -mtriple=i686-windows -no-x86-call-frame-opt | FileCheck %s -check-prefix=NOPUSH
 ; RUN: llc < %s -mtriple=x86_64-windows | FileCheck %s -check-prefix=X64
+; RUN: llc < %s -mtriple=x86_64-uefi | FileCheck %s -check-prefix=X64
 ; RUN: llc < %s -mtriple=i686-pc-linux | FileCheck %s -check-prefix=LINUX
 
 %class.Class = type { i32 }

llvm/test/CodeGen/X86/win64_eh.ll

@@ -1,4 +1,5 @@
 ; RUN: llc < %s -O0 -mattr=sse2 -mtriple=x86_64-pc-windows-itanium | FileCheck %s -check-prefix=WIN64 -check-prefix=NORM
+; RUN: llc < %s -O0 -mattr=sse2 -mtriple=x86_64-uefi | FileCheck %s -check-prefix=WIN64 -check-prefix=NORM
 ; RUN: llc < %s -O0 -mattr=sse2 -mtriple=x86_64-pc-mingw32 | FileCheck %s -check-prefix=WIN64 -check-prefix=NORM
 ; RUN: llc < %s -O0 -mattr=sse2 -mtriple=x86_64-pc-mingw32 -mcpu=atom | FileCheck %s -check-prefix=WIN64 -check-prefix=ATOM
 

llvm/test/CodeGen/X86/win64_frame.ll

@@ -1,6 +1,8 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc < %s -mtriple=x86_64-pc-win32              | FileCheck %s
 ; RUN: llc < %s -mtriple=x86_64-pc-win32 -mattr=+sahf | FileCheck %s
+; RUN: llc < %s -mtriple=x86_64-uefi              | FileCheck %s
+; RUN: llc < %s -mtriple=x86_64-uefi -mattr=+sahf | FileCheck %s
 
 define i32 @f1(i32 %p1, i32 %p2, i32 %p3, i32 %p4, i32 %p5) "frame-pointer"="all" {
 ; CHECK-LABEL: f1:

llvm/test/CodeGen/X86/win_chkstk.ll

@@ -1,6 +1,8 @@
 ; RUN: llc < %s -mtriple=i686-pc-win32 | FileCheck %s -check-prefix=WIN_X32
 ; RUN: llc < %s -mtriple=x86_64-pc-win32 | FileCheck %s -check-prefix=WIN_X64
 ; RUN: llc < %s -mtriple=x86_64-pc-win32 -code-model=large | FileCheck %s -check-prefix=WIN64_LARGE
+; RUN: llc < %s -mtriple=x86_64-uefi | FileCheck %s -check-prefix=WIN_X64
+; RUN: llc < %s -mtriple=x86_64-uefi -code-model=large | FileCheck %s -check-prefix=WIN64_LARGE
 ; RUN: llc < %s -mtriple=i686-pc-mingw32 | FileCheck %s -check-prefix=MINGW_X32
 ; RUN: llc < %s -mtriple=x86_64-pc-mingw32 | FileCheck %s -check-prefix=MINGW_X64
 ; RUN: llc < %s -mtriple=i386-pc-linux | FileCheck %s -check-prefix=LINUX