30 lines
819 B
LLVM
30 lines
819 B
LLVM
; 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
|
|
}
|