2 ;; NewGVN zaps the strlens, but currently takes two iterations to evaluate the conditions, because
3 ;; we prune predicateinfo, and the icmps only become equivalent after the strlens are zapped
4 ; Two occurrences of strlen should be zapped.
5 ; RUN: opt < %s -passes=newgvn -S | FileCheck %s
6 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-f80:128:128"
7 target triple = "i386-apple-darwin9"
9 define i32 @test(i32 %g, ptr %P) nounwind {
11 %tmp2 = call i32 @strlen( ptr %P ) nounwind readonly ; <i32> [#uses=1]
12 %tmp3 = icmp eq i32 %tmp2, 100 ; <i1> [#uses=1]
13 %tmp34 = zext i1 %tmp3 to i8 ; <i8> [#uses=1]
14 %toBool = icmp ne i8 %tmp34, 0 ; <i1> [#uses=1]
15 br i1 %toBool, label %bb, label %bb6
21 %tmp8 = add i32 %g, 42 ; <i32> [#uses=2]
22 %tmp10 = call i32 @strlen( ptr %P ) nounwind readonly ; <i32> [#uses=1]
23 %tmp11 = icmp eq i32 %tmp10, 100 ; <i1> [#uses=1]
24 %tmp1112 = zext i1 %tmp11 to i8 ; <i8> [#uses=1]
25 %toBool13 = icmp ne i8 %tmp1112, 0 ; <i1> [#uses=1]
26 br i1 %toBool13, label %bb14, label %bb16
32 %tmp18 = mul i32 %tmp8, 2 ; <i32> [#uses=1]
33 %tmp20 = call i32 @strlen( ptr %P ) nounwind readonly ; <i32> [#uses=1]
34 %tmp21 = icmp eq i32 %tmp20, 100 ; <i1> [#uses=1]
35 %tmp2122 = zext i1 %tmp21 to i8 ; <i8> [#uses=1]
36 %toBool23 = icmp ne i8 %tmp2122, 0 ; <i1> [#uses=1]
37 br i1 %toBool23, label %bb24, label %bb26
45 bb27: ; preds = %bb26, %bb24, %bb14, %bb
46 %tmp.0 = phi i32 [ 11, %bb26 ], [ %tmp18, %bb24 ], [ %tmp8, %bb14 ], [ %g, %bb ] ; <i32> [#uses=1]
49 return: ; preds = %bb27
53 ; CHECK: define i32 @test(i32 %g, ptr %P) #0 {
55 ; CHECK: %tmp2 = call i32 @strlen(ptr %P) #1
56 ; CHECK: %tmp3 = icmp eq i32 %tmp2, 100
57 ; CHECK: %tmp34 = zext i1 %tmp3 to i8
58 ; CHECK: br i1 %tmp3, label %bb, label %bb6
60 ; CHECK: br label %bb27
62 ; CHECK: %tmp8 = add i32 %g, 42
63 ; CHECK: br i1 false, label %bb14, label %bb16
65 ; CHECK: br label %bb27
67 ; CHECK: %tmp18 = mul i32 %tmp8, 2
68 ; CHECK: br i1 false, label %bb24, label %bb26
70 ; CHECK: br label %bb27
72 ; CHECK: br label %bb27
74 ; CHECK: %tmp.0 = phi i32 [ 11, %bb26 ], [ undef, %bb24 ], [ undef, %bb14 ], [ %g, %bb ]
75 ; CHECK: ret i32 %tmp.0
78 declare i32 @strlen(ptr) nounwind readonly