File: sve-callbyref-notailcall.ll

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,634,792 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (29 lines) | stat: -rw-r--r-- 1,520 bytes parent folder | download | duplicates (19)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
; Because some arguments are passed by reference (through stack),
; the compiler should not do tail-call optimization.
; RUN: llc -mtriple=aarch64 -mattr=+sve < %s | FileCheck %s

; CHECK-LABEL: caller:
; CHECK:       addvl sp, sp, #-[[STACKSIZE:[0-9]+]]
; CHECK-NOT:   addvl sp
; CHECK:       bl callee
; CHECK:       addvl sp, sp, #[[STACKSIZE]]
; CHECK:       ret
define <vscale x 16 x i8> @caller(<vscale x 16 x i8> %v) {
  %1 = tail call <vscale x 16 x i8> @callee(<vscale x 16 x i8> %v, <vscale x 16 x i8> %v, <vscale x 16 x i8> %v, <vscale x 16 x i8> %v, <vscale x 16 x i8> %v, <vscale x 16 x i8> %v, <vscale x 16 x i8> %v, <vscale x 16 x i8> %v, <vscale x 16 x i8> %v)
  ret <vscale x 16 x i8> %1
}

declare <vscale x 16 x i8> @callee(<vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>, <vscale x 16 x i8>)

; CHECK-LABEL: caller_pred:
; CHECK:       addvl sp, sp, #-[[STACKSIZE:[0-9]+]]
; CHECK-NOT:   addvl sp
; CHECK:       bl callee_pred
; CHECK:       addvl sp, sp, #[[STACKSIZE]]
; CHECK:       ret
define <vscale x 16 x i1> @caller_pred(<vscale x 16 x i1> %v) {
  %1 = tail call <vscale x 16 x i1> @callee_pred(<vscale x 16 x i1> %v, <vscale x 16 x i1> %v, <vscale x 16 x i1> %v, <vscale x 16 x i1> %v, <vscale x 16 x i1> %v)
  ret <vscale x 16 x i1> %1
}

declare <vscale x 16 x i1> @callee_pred(<vscale x 16 x i1>, <vscale x 16 x i1>, <vscale x 16 x i1>, <vscale x 16 x i1>, <vscale x 16 x i1>)