File: musttail_cc.ll

package info (click to toggle)
swiftlang 6.1.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,791,604 kB
  • sloc: cpp: 9,901,740; ansic: 2,201,431; asm: 1,091,827; python: 308,252; objc: 82,166; f90: 80,126; lisp: 38,358; pascal: 25,559; sh: 20,429; ml: 5,058; perl: 4,745; makefile: 4,484; awk: 3,535; javascript: 3,018; xml: 918; fortran: 664; cs: 573; ruby: 396
file content (34 lines) | stat: -rw-r--r-- 786 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
30
31
32
33
34
 
; RUN: opt < %s -passes=globalopt -S | FileCheck %s
; PR36546

; Check that musttail callee preserves its calling convention

define i32 @test(i32 %a) {
  ; CHECK: %ca = musttail call i32 @foo(i32 %a)
  %ca = musttail call i32 @foo(i32 %a)
  ret i32 %ca
}

; CHECK-LABEL: define internal i32 @foo(i32 %a)
define internal i32 @foo(i32 %a) {
  ret i32 %a
}

; Check that musttail caller preserves its calling convention

define i32 @test2(i32 %a) {
  %ca = call i32 @foo1(i32 %a)
  ret i32 %ca
}

; CHECK-LABEL: define internal i32 @foo1(i32 %a)
define internal i32 @foo1(i32 %a) {
  ; CHECK: %ca = musttail call i32 @foo2(i32 %a)
  %ca = musttail call i32 @foo2(i32 %a)
  ret i32 %ca
}

; CHECK-LABEL: define internal i32 @foo2(i32 %a)
define internal i32 @foo2(i32 %a) {
  ret i32 %a
}