File: arm64-stacksave.ll

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-11
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,418,840 kB
  • sloc: cpp: 5,290,826; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,898; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,913; xml: 953; cs: 573; fortran: 539
file content (20 lines) | stat: -rw-r--r-- 867 bytes parent folder | download | duplicates (9) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
; RUN: llc -mtriple=arm64-apple-macosx10.8.0 < %s -verify-coalescing
; RUN: llc -mtriple=arm64_32-apple-ios9.0 < %s -verify-coalescing
; <rdar://problem/11522048>

; Verify that we can handle spilling the stack pointer without attempting
; spilling it directly.
; CHECK: f
; CHECK: mov [[X0:x[0-9]+]], sp
; CHECK: str [[X0]]
; CHECK: inlineasm
define void @f() nounwind ssp {
entry:
  %savedstack = call i8* @llvm.stacksave() nounwind
  call void asm sideeffect "; inlineasm", "~{x0},~{x1},~{x2},~{x3},~{x4},~{x5},~{x6},~{x7},~{x8},~{x9},~{x10},~{x11},~{x12},~{x13},~{x14},~{x15},~{x16},~{x17},~{x18},~{x19},~{x20},~{x21},~{x22},~{x23},~{x24},~{x25},~{x26},~{x27},~{x28},~{fp},~{lr},~{sp},~{memory}"() nounwind
  call void @llvm.stackrestore(i8* %savedstack) nounwind
  ret void
}

declare i8* @llvm.stacksave() nounwind
declare void @llvm.stackrestore(i8*) nounwind