File: win-alloca.ll

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (24 lines) | stat: -rw-r--r-- 891 bytes parent folder | download | duplicates (4) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
; RUN: llc -mtriple aarch64-windows -verify-machineinstrs -filetype asm -o - %s | FileCheck %s -check-prefixes=CHECK,CHECK-OPT
; RUN: llc -mtriple aarch64-windows -verify-machineinstrs -filetype asm -o - %s -O0 | FileCheck %s
; RUN: llc -mtriple arm64ec-windows-msvc -verify-machineinstrs -filetype asm -o - %s | FileCheck -check-prefix=CHECK-ARM64EC %s

define void @func(i64 %a) {
entry:
  %0 = alloca i8, i64 %a, align 16
  call void @func2(ptr nonnull %0)
  ret void
}

declare void @func2(ptr)

; The -O0 version here ends up much less elegant, so just check the
; details of the optimized form, but check that -O0 at least emits the
; call to __chkstk.

; CHECK: add [[REG1:x[0-9]+]], x0, #15
; CHECK-OPT: lsr x15, [[REG1]], #4
; CHECK: bl __chkstk
; CHECK-OPT: sub [[REG3:x[0-9]+]], sp, x15, lsl #4
; CHECK-OPT: mov sp, [[REG3]]
; CHECK: bl func2
; CHECK-ARM64EC: bl __chkstk_arm64ec