1 ; Test that simplifycfg can create switch instructions from constant pointers.
3 ; RUN: opt < %s -simplifycfg -S | FileCheck %s
5 ; CHECK: switch i64 %magicptr
13 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
14 target triple = "x86_64-apple-darwin10.0.0"
16 @.str = private constant [5 x i8] c"null\00" ; <[5 x i8]*> [#uses=2]
17 @.str1 = private constant [4 x i8] c"one\00" ; <[4 x i8]*> [#uses=2]
18 @.str2 = private constant [4 x i8] c"two\00" ; <[4 x i8]*> [#uses=2]
19 @.str3 = private constant [5 x i8] c"four\00" ; <[5 x i8]*> [#uses=2]
21 define void @f(i8* %x) nounwind ssp {
23 %tobool = icmp eq i8* %x, null ; <i1> [#uses=1]
24 br i1 %tobool, label %if.then, label %if.else
26 if.then: ; preds = %entry
27 %call = call i32 @puts(i8* getelementptr inbounds ([5 x i8]* @.str, i64 0, i64 0)) nounwind ; <i32> [#uses=0]
30 if.else: ; preds = %entry
31 %cmp = icmp eq i8* %x, inttoptr (i64 1 to i8*) ; <i1> [#uses=1]
32 br i1 %cmp, label %if.then2, label %if.else4
34 if.then2: ; preds = %if.else
35 %call3 = call i32 @puts(i8* getelementptr inbounds ([4 x i8]* @.str1, i64 0, i64 0)) nounwind ; <i32> [#uses=0]
38 if.else4: ; preds = %if.else
39 %cmp6 = icmp eq i8* %x, inttoptr (i64 2 to i8*) ; <i1> [#uses=1]
40 br i1 %cmp6, label %if.then9, label %lor.lhs.false
42 lor.lhs.false: ; preds = %if.else4
43 %cmp8 = icmp eq i8* %x, inttoptr (i64 3 to i8*) ; <i1> [#uses=1]
44 br i1 %cmp8, label %if.then9, label %if.else11
46 if.then9: ; preds = %lor.lhs.false, %if.else4
47 %call10 = call i32 @puts(i8* getelementptr inbounds ([4 x i8]* @.str2, i64 0, i64 0)) nounwind ; <i32> [#uses=0]
50 if.else11: ; preds = %lor.lhs.false
51 %cmp13 = icmp eq i8* %x, inttoptr (i64 4 to i8*) ; <i1> [#uses=1]
52 br i1 %cmp13, label %if.then14, label %if.else16
54 if.then14: ; preds = %if.else11
55 %call15 = call i32 @puts(i8* getelementptr inbounds ([5 x i8]* @.str3, i64 0, i64 0)) nounwind ; <i32> [#uses=0]
58 if.else16: ; preds = %if.else11
59 %call18 = call i32 @puts(i8* %x) nounwind ; <i32> [#uses=0]
62 if.end: ; preds = %if.else16, %if.then14
65 if.end19: ; preds = %if.end, %if.then9
68 if.end20: ; preds = %if.end19, %if.then2
71 if.end21: ; preds = %if.end20, %if.then
75 declare i32 @puts(i8*)