blob: a8931527ea6d839b77905dae67b8864450f8d738 [file] [log] [blame]
Manman Ren4ece7452014-01-31 00:42:44 +00001; RUN: llc < %s -mtriple=x86_64-apple-darwin -print-machineinstrs=expand-isel-pseudos -o /dev/null 2>&1 | FileCheck %s
2
3;; Make sure a transformation in SelectionDAGBuilder that converts "or + br" to
4;; two branches correctly updates the branch probability.
5
6@max_regno = common global i32 0, align 4
7
8define void @test(i32* %old, i32 %final) {
9for.cond:
10 br label %for.cond2
11
12for.cond2: ; preds = %for.inc, %for.cond
13 %i.1 = phi i32 [ %inc19, %for.inc ], [ 0, %for.cond ]
14 %bit.0 = phi i32 [ %shl, %for.inc ], [ 1, %for.cond ]
15 %tobool = icmp eq i32 %bit.0, 0
16 %v3 = load i32* @max_regno, align 4
17 %cmp4 = icmp eq i32 %i.1, %v3
18 %or.cond = or i1 %tobool, %cmp4
19 br i1 %or.cond, label %for.inc20, label %for.inc, !prof !0
20; CHECK: BB#1: derived from LLVM BB %for.cond2
21; CHECK: Successors according to CFG: BB#3(56008718) BB#4(2203492365)
22; CHECK: BB#4: derived from LLVM BB %for.cond2
23; CHECK: Successors according to CFG: BB#3(112017436) BB#2(4294967294)
24
25for.inc: ; preds = %for.cond2
26 %shl = shl i32 %bit.0, 1
27 %inc19 = add nsw i32 %i.1, 1
28 br label %for.cond2
29
30for.inc20: ; preds = %for.cond2
31 ret void
32}
33
34!0 = metadata !{metadata !"branch_weights", i32 112017436, i32 -735157296}