File: varargs.ll

package info (click to toggle)
llvm-toolchain-21 1%3A21.1.1-1
  • links: PTS, VCS
  • area: main
  • in suites:
  • size: 2,236,080 kB
  • sloc: cpp: 7,618,171; ansic: 1,433,906; asm: 1,058,726; python: 252,113; f90: 94,671; objc: 70,753; lisp: 42,813; pascal: 18,401; sh: 10,069; ml: 5,111; perl: 4,720; awk: 3,523; makefile: 3,397; javascript: 2,272; xml: 892; fortran: 770
file content (54 lines) | stat: -rw-r--r-- 1,154 bytes parent folder | download | duplicates (6)
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
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
; RUN: llc < %s -mtriple=xcore | FileCheck %s

define void @_Z1fz(...) {
entry:
; CHECK-LABEL: _Z1fz:
; CHECK: extsp 3
; CHECK: stw r[[REG:[0-3]{1,1}]]
; CHECK: , sp[[[REG]]]
; CHECK: stw r[[REG:[0-3]{1,1}]]
; CHECK: , sp[[[REG]]]
; CHECK: stw r[[REG:[0-3]{1,1}]]
; CHECK: , sp[[[REG]]]
; CHECK: stw r[[REG:[0-3]{1,1}]]
; CHECK: , sp[[[REG]]]
; CHECK: ldaw sp, sp[3]
; CHECK: retsp 0
  ret void
}


declare void @llvm.va_start(ptr) nounwind
declare void @llvm.va_end(ptr) nounwind
declare void @f(i32) nounwind
define void @test_vararg(...) nounwind {
entry:
; CHECK-LABEL: test_vararg
; CHECK: extsp 6
; CHECK: stw lr, sp[1]
; CHECK-DAG: stw r3, sp[6]
; CHECK-DAG: stw r0, sp[3]
; CHECK-DAG: stw r1, sp[4]
; CHECK-DAG: stw r2, sp[5]
; CHECK: ldaw r0, sp[3]
; CHECK: stw r0, sp[2]
  %list = alloca ptr, align 4
  call void @llvm.va_start(ptr %list)
  br label %for.cond

; CHECK-LABEL: .LBB1_1
; CHECK: ldw r0, sp[2]
; CHECK: add r1, r0, 4
; CHECK: stw r1, sp[2]
; CHECK: ldw r0, r0[0]
; CHECK: bl f
; CHECK: bu .LBB1_1
for.cond:
  %0 = va_arg ptr %list, i32
  call void @f(i32 %0)
  br label %for.cond

  call void @llvm.va_end(ptr %list)
  ret void
}