File: thread-prob-3.ll

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (29 lines) | stat: -rw-r--r-- 819 bytes parent folder | download | duplicates (7) 
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
 
; RUN: opt -debug-only=branch-prob -jump-threading -S %s 2>&1 | FileCheck %s
; REQUIRES: asserts

; Make sure that we set edge probabilities for bb2 as we
; call DuplicateCondBranchOnPHIIntoPred(bb3, {bb2}).
;
; CHECK-LABEL: ---- Branch Probability Info : foo
; CHECK:      set edge bb2 -> 0 successor probability to 0x80000000 / 0x80000000 = 100.00%
; CHECK-NEXT: set edge bb2 -> 1 successor probability to 0x00000000 / 0x80000000 = 0.00%
define void @foo(i1 %f0, i1 %f1, i1 %f2) !prof !{!"function_entry_count", i64 0} {
; CHECK-LABEL: @foo(
bb1:
  br i1 %f0, label %bb3, label %bb2

bb2:
; CHECK:      bb2:
; CHECK-NEXT:   br i1 %f2, label %exit1, label %unreach
  br label %bb3

bb3:
  %ph = phi i1 [ %f1, %bb1 ], [ %f2, %bb2 ]
  br i1 %ph, label %exit1, label %unreach

exit1:
  ret void

unreach:
  unreachable
}