File: callbr-crash.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.8-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,696 kB
  • sloc: cpp: 7,438,781; ansic: 1,393,871; asm: 1,012,926; python: 241,771; f90: 86,635; objc: 75,411; lisp: 42,144; pascal: 17,286; sh: 8,596; ml: 5,082; perl: 4,730; makefile: 3,591; awk: 3,523; javascript: 2,251; xml: 892; fortran: 672
file content (32 lines) | stat: -rw-r--r-- 1,049 bytes parent folder | download | duplicates (10) 
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
 
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=reg2mem -S < %s | FileCheck %s

define void @crash() {
; CHECK-LABEL: @crash(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[A_REG2MEM:%.*]] = alloca i64, align 8
; CHECK-NEXT:    %"reg2mem alloca point" = bitcast i32 0 to i32
; CHECK-NEXT:    [[A:%.*]] = callbr i64 asm "", "=r,r,!i"(i64 0)
; CHECK-NEXT:            to label [[THEN:%.*]] [label %entry.else_crit_edge]
; CHECK:       entry.else_crit_edge:
; CHECK-NEXT:    store i64 [[A]], ptr [[A_REG2MEM]], align 4
; CHECK-NEXT:    br label [[ELSE:%.*]]
; CHECK:       then:
; CHECK-NEXT:    store i64 [[A]], ptr [[A_REG2MEM]], align 4
; CHECK-NEXT:    [[A_RELOAD:%.*]] = load i64, ptr [[A_REG2MEM]], align 4
; CHECK-NEXT:    [[B:%.*]] = inttoptr i64 [[A_RELOAD]] to ptr
; CHECK-NEXT:    br label [[ELSE]]
; CHECK:       else:
; CHECK-NEXT:    ret void
;
entry:
  %a = callbr i64 asm "", "=r,r,!i"(i64 0)
  to label %then [label %else]

then:
  %b = inttoptr i64 %a to ptr
  br label %else

else:
  ret void
}