File: guard-intrinsic.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-- 1,113 bytes parent folder | download | duplicates (18)
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: opt -S -always-inline < %s | FileCheck %s

declare void @llvm.experimental.guard(i1, ...)

define i8 @callee(i1* %c_ptr) alwaysinline {
  %c = load volatile i1, i1* %c_ptr
  call void(i1, ...) @llvm.experimental.guard(i1 %c, i32 1) [ "deopt"(i32 1) ]
  ret i8 5
}

define void @caller_0(i1* %c, i8* %ptr) {
; CHECK-LABEL: @caller_0(
entry:
; CHECK:  [[COND:%[^ ]+]] = load volatile i1, i1* %c
; CHECK-NEXT:  call void (i1, ...) @llvm.experimental.guard(i1 [[COND]], i32 1) [ "deopt"(i32 2, i32 1) ]
; CHECK-NEXT:  store i8 5, i8* %ptr

  %v = call i8 @callee(i1* %c)  [ "deopt"(i32 2) ]
  store i8 %v, i8* %ptr
  ret void
}

define i32 @caller_1(i1* %c, i8* %ptr) personality i8 3 {
; CHECK-LABEL: @caller_1(
; CHECK:  [[COND:%[^ ]+]] = load volatile i1, i1* %c
; CHECK-NEXT:  call void (i1, ...) @llvm.experimental.guard(i1 [[COND]], i32 1) [ "deopt"(i32 3, i32 1) ]
; CHECK-NEXT:  br label %normal
entry:
  %v = invoke i8 @callee(i1* %c)  [ "deopt"(i32 3) ] to label %normal
       unwind label %unwind

unwind:
  %lp = landingpad i32 cleanup
  ret i32 43

normal:
  store i8 %v, i8* %ptr
  ret i32 42
}