llvm-6502/2009-06-03-Win64SpillXMM.ll at ccf53013cdc56b2c4ca9dd24688f71d29b007630 - llvm-6502 - Applefritter: Git

6502/llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-29 10:32:47 +00:00

NAKAMURA Takumi b720a3d15c Re-apply r211399, "Generate native unwind info on Win64" with a fix to ignore SEH pseudo ops in X86 JIT emitter.

--
This patch enables LLVM to emit Win64-native unwind info rather than
DWARF CFI.  It handles all corner cases (I hope), including stack
realignment.

Because the unwind info is not flexible enough to describe stack frames
with a gap of unknown size in the middle, such as the one caused by
stack realignment, I modified register spilling code to place all spills
into the fixed frame slots, so that they can be accessed relative to the
frame pointer.

Patch by Vadim Chugunov!

Reviewed By: rnk

Differential Revision: http://reviews.llvm.org/D4081

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211691 91177308-0d34-0410-b5e6-96231b3b80d8

2014-06-25 12:41:52 +00:00

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 ; RUN: llc -mcpu=generic -mtriple=x86_64-mingw32 < %s | FileCheck %s
 ; CHECK: subq    $40, %rsp
 ; CHECK: movaps  %xmm8, 16(%rsp)
 ; CHECK: movaps  %xmm7, (%rsp)
 define i32 @a() nounwind {
 entry:
         tail call void asm sideeffect "", "~{xmm7},~{xmm8},~{dirflag},~{fpsr},~{flags}"() nounwind
         ret i32 undef
 }