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
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
| ; REQUIRES: asserts
; RUN: llc < %s -disable-preheader-prot=true -stats 2>&1 | grep "Number of blocks eliminated" | grep 3
; RUN: llc < %s -disable-preheader-prot=true -stats -cgp-freq-ratio-to-skip-merge=10 2>&1 | grep "Number of blocks eliminated" | grep 6
; RUN: llc < %s -disable-preheader-prot=false -stats 2>&1 | grep "Number of blocks eliminated" | grep 3
; PR1296
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64"
target triple = "i686-apple-darwin8"
define i32 @foo(i32 %A, i32 %B, i32 %C) nounwind {
entry:
switch i32 %A, label %out [
i32 1, label %bb
i32 0, label %bb13
i32 2, label %bb35
]
bb: ; preds = %cond_next, %entry
%i.144.1 = phi i32 [ 0, %entry ], [ %tmp7, %cond_next ] ; <i32> [#uses=2]
%tmp4 = and i32 %i.144.1, %B ; <i32> [#uses=1]
icmp eq i32 %tmp4, 0 ; <i1>:0 [#uses=1]
br i1 %0, label %cond_next, label %out
cond_next: ; preds = %bb
%tmp7 = add i32 %i.144.1, 1 ; <i32> [#uses=2]
icmp slt i32 %tmp7, 1000 ; <i1>:1 [#uses=1]
br i1 %1, label %bb, label %out
bb13: ; preds = %cond_next18, %entry
%i.248.1 = phi i32 [ 0, %entry ], [ %tmp20, %cond_next18 ] ; <i32> [#uses=2]
%tmp16 = and i32 %i.248.1, %C ; <i32> [#uses=1]
icmp eq i32 %tmp16, 0 ; <i1>:2 [#uses=1]
br i1 %2, label %cond_next18, label %out
cond_next18: ; preds = %bb13
%tmp20 = add i32 %i.248.1, 1 ; <i32> [#uses=2]
icmp slt i32 %tmp20, 1000 ; <i1>:3 [#uses=1]
br i1 %3, label %bb13, label %out
bb27: ; preds = %bb35
%tmp30 = and i32 %i.3, %C ; <i32> [#uses=1]
icmp eq i32 %tmp30, 0 ; <i1>:4 [#uses=1]
br i1 %4, label %cond_next32, label %out
cond_next32: ; preds = %bb27
%indvar.next = add i32 %i.3, 1 ; <i32> [#uses=1]
br label %bb35
bb35: ; preds = %entry, %cond_next32
%i.3 = phi i32 [ %indvar.next, %cond_next32 ], [ 0, %entry ] ; <i32> [#uses=3]
icmp slt i32 %i.3, 1000 ; <i1>:5 [#uses=1]
br i1 %5, label %bb27, label %out
out: ; preds = %bb27, %bb35, %bb13, %cond_next18, %bb, %cond_next, %entry
%result.0 = phi i32 [ 0, %entry ], [ 1, %bb ], [ 0, %cond_next ], [ 1, %bb13 ], [ 0, %cond_next18 ], [ 1, %bb27 ], [ 0, %bb35 ] ; <i32> [#uses=1]
ret i32 %result.0
}
|