File: control-flow.ll

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm-proposed-updates
  • size: 1,998,492 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (37 lines) | stat: -rw-r--r-- 932 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
34
35
36
37
 
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
; RUN: opt < %s -passes=argpromotion -S | FileCheck %s

; Don't promote around control flow.
define internal i32 @callee(i1 %C, ptr %P) {
; CHECK-LABEL: define {{[^@]+}}@callee
; CHECK-SAME: (i1 [[C:%.*]], ptr [[P:%.*]]) {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
; CHECK:       T:
; CHECK-NEXT:    ret i32 17
; CHECK:       F:
; CHECK-NEXT:    [[X:%.*]] = load i32, ptr [[P]], align 4
; CHECK-NEXT:    ret i32 [[X]]
;
entry:
  br i1 %C, label %T, label %F

T:
  ret i32 17

F:
  %X = load i32, ptr %P
  ret i32 %X
}

define i32 @foo() {
; CHECK-LABEL: define {{[^@]+}}@foo() {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[X:%.*]] = call i32 @callee(i1 true, ptr null)
; CHECK-NEXT:    ret i32 [[X]]
;
entry:
  %X = call i32 @callee(i1 true, ptr null)
  ret i32 %X
}