File: musttail-thunk.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 (33 lines) | stat: -rw-r--r-- 924 bytes parent folder | download | duplicates (12) 
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
 
; RUN: opt -passes=instcombine -S < %s | FileCheck %s
; RUN: opt -debugify-each -passes=instcombine -S < %s | FileCheck %s

; These are both direct calls, but make sure instcombine leaves the casts
; alone.

define i32 @call_thunk(i32 %x, i32 %y) {
  %r = call i32 @inc_first_arg_thunk(i32 %x, i32 %y)
  ret i32 %r
}

; CHECK-LABEL: define i32 @call_thunk(i32 %x, i32 %y)
; CHECK:   %r = call i32 @inc_first_arg_thunk(i32 %x, i32 %y)
; CHECK:   ret i32 %r

define internal void @inc_first_arg_thunk(i32 %arg1, ...) #0 {
entry:
  %inc = add i32 %arg1, 1
  musttail call void (i32, ...) @plus(i32 %inc, ...)
  ret void
}

; CHECK-LABEL: define internal void @inc_first_arg_thunk(i32 %arg1, ...) #0
; CHECK:   %inc = add i32 %arg1, 1
; CHECK:   musttail call void (i32, ...) @plus(i32 %inc, ...)
; CHECK:   ret void

define internal i32 @plus(i32 %x, i32 %y) {
  %r = add i32 %x, %y
  ret i32 %r
}

attributes #0 = { "thunk" }