File: volatile-atomic.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 (40 lines) | stat: -rw-r--r-- 1,107 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
38
39
40
 
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=argpromotion < %s | FileCheck %s

; Make sure volatile and atomic loads are not promoted.

define internal i32 @callee_volatile(ptr %p) {
; CHECK-LABEL: @callee_volatile(
; CHECK-NEXT:    [[V:%.*]] = load volatile i32, ptr [[P:%.*]], align 4
; CHECK-NEXT:    ret i32 [[V]]
;
  %v = load volatile i32, ptr %p
  ret i32 %v
}

define void @caller_volatile(ptr %p) {
; CHECK-LABEL: @caller_volatile(
; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @callee_volatile(ptr [[P:%.*]])
; CHECK-NEXT:    ret void
;
  call i32 @callee_volatile(ptr %p)
  ret void
}

define internal i32 @callee_atomic(ptr %p) {
; CHECK-LABEL: @callee_atomic(
; CHECK-NEXT:    [[V:%.*]] = load atomic i32, ptr [[P:%.*]] seq_cst, align 4
; CHECK-NEXT:    ret i32 [[V]]
;
  %v = load atomic i32, ptr %p seq_cst, align 4
  ret i32 %v
}

define void @caller_atomic(ptr %p) {
; CHECK-LABEL: @caller_atomic(
; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @callee_atomic(ptr [[P:%.*]])
; CHECK-NEXT:    ret void
;
  call i32 @callee_atomic(ptr %p)
  ret void
}