File: x86-64-xmm-spill-unaligned.ll

package info (click to toggle)
llvm-toolchain-17 1%3A17.0.6-22
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,799,624 kB
  • sloc: cpp: 6,428,607; ansic: 1,383,196; asm: 793,408; python: 223,504; objc: 75,364; f90: 60,502; lisp: 33,869; pascal: 15,282; sh: 9,684; perl: 7,453; ml: 4,937; awk: 3,523; makefile: 2,889; javascript: 2,149; xml: 888; fortran: 619; cs: 573
file content (17 lines) | stat: -rw-r--r-- 658 bytes parent folder | download | duplicates (21) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
; Make sure that when the stack may be misaligned on function entry, fixed frame
; elements (here: XMM spills) are accessed using instructions that tolerate
; unaligned access.
;
; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mcpu=x86-64 -mattr=+sse,+sse-unaligned-mem --frame-pointer=all < %s | FileCheck %s

define dso_local preserve_allcc void @func() #0 {
; CHECK-LABEL: func:
; CHECK: movups  %xmm0, -{{[0-9]+}}(%rbp)
  call void asm sideeffect "", "~{xmm0},~{dirflag},~{fpsr},~{flags}"() #1
; CHECK: movups  -{{[0-9]+}}(%rbp), %xmm0
  ret void
}

attributes #0 = { nounwind }
!llvm.module.flags = !{!0}
!0 = !{i32 2, !"override-stack-alignment", i32 8}