File: libcall-sret.ll

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-12
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,180 kB
  • sloc: cpp: 5,593,972; ansic: 986,872; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,538; xml: 953; cs: 573; fortran: 567
file content (39 lines) | stat: -rw-r--r-- 1,199 bytes parent folder | download | duplicates (14)
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
; RUN: llc -mtriple=i686-linux-gnu -o - %s | FileCheck %s

@var = global i128 0

; We were trying to convert the i128 operation into a libcall, but failing to
; perform sret demotion when we couldn't return the result in registers. Make
; sure we marshal the return properly:

define void @test_sret_libcall(i128 %l, i128 %r) {
; CHECK-LABEL: test_sret_libcall:

  ; Stack for call: 4(sret ptr), 16(i128 %l), 16(128 %r). So next logical
  ; (aligned) place for the actual sret data is %esp + 20.
; CHECK: leal 20(%esp), [[SRET_ADDR:%[a-z]+]]
; CHECK: pushl 72(%esp)
; CHECK: pushl 72(%esp)
; CHECK: pushl 72(%esp)
; CHECK: pushl 72(%esp)
; CHECK: pushl 72(%esp)
; CHECK: pushl 72(%esp)
; CHECK: pushl 72(%esp)
; CHECK: pushl 72(%esp)
; CHECK: pushl [[SRET_ADDR]]

; CHECK: calll __udivti3

; CHECK: addl $44, %esp
; CHECK-DAG: movl 8(%esp), [[RES0:%[a-z]+]]
; CHECK-DAG: movl 12(%esp), [[RES1:%[a-z]+]]
; CHECK-DAG: movl 16(%esp), [[RES2:%[a-z]+]]
; CHECK-DAG: movl 20(%esp), [[RES3:%[a-z]+]]
; CHECK-DAG: movl [[RES0]], var
; CHECK-DAG: movl [[RES1]], var+4
; CHECK-DAG: movl [[RES2]], var+8
; CHECK-DAG: movl [[RES3]], var+12
  %quot = udiv i128 %l, %r
  store i128 %quot, i128* @var
  ret void
}