| Jakob Stoklund Olesen | e8cf437 | 2010-02-05 22:03:18 +0000 | [diff] [blame] | 1 | ; Test that simplifycfg can create switch instructions from constant pointers. |
| 2 | ; |
| 3 | ; RUN: opt < %s -simplifycfg -S | FileCheck %s |
| 4 | |
| 5 | ; CHECK: switch i64 %magicptr |
| 6 | ; CHECK: i64 0, label |
| 7 | ; CHECK: i64 1, label |
| 8 | ; CHECK: i64 2, label |
| 9 | ; CHECK: i64 3, label |
| 10 | ; CHECK: i64 4, label |
| 11 | ; CHECK-NOT: br |
| 12 | ; CHECK: } |
| 13 | |
| 14 | 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" |
| 15 | target triple = "x86_64-apple-darwin10.0.0" |
| 16 | |
| 17 | @.str = private constant [5 x i8] c"null\00" ; <[5 x i8]*> [#uses=2] |
| 18 | @.str1 = private constant [4 x i8] c"one\00" ; <[4 x i8]*> [#uses=2] |
| 19 | @.str2 = private constant [4 x i8] c"two\00" ; <[4 x i8]*> [#uses=2] |
| 20 | @.str3 = private constant [5 x i8] c"four\00" ; <[5 x i8]*> [#uses=2] |
| 21 | |
| 22 | define void @f(i8* %x) nounwind ssp { |
| 23 | entry: |
| 24 | %tobool = icmp eq i8* %x, null ; <i1> [#uses=1] |
| 25 | br i1 %tobool, label %if.then, label %if.else |
| 26 | |
| 27 | if.then: ; preds = %entry |
| 28 | %call = call i32 @puts(i8* getelementptr inbounds ([5 x i8]* @.str, i64 0, i64 0)) nounwind ; <i32> [#uses=0] |
| 29 | br label %if.end21 |
| 30 | |
| 31 | if.else: ; preds = %entry |
| 32 | %cmp = icmp eq i8* %x, inttoptr (i64 1 to i8*) ; <i1> [#uses=1] |
| 33 | br i1 %cmp, label %if.then2, label %if.else4 |
| 34 | |
| 35 | if.then2: ; preds = %if.else |
| 36 | %call3 = call i32 @puts(i8* getelementptr inbounds ([4 x i8]* @.str1, i64 0, i64 0)) nounwind ; <i32> [#uses=0] |
| 37 | br label %if.end20 |
| 38 | |
| 39 | if.else4: ; preds = %if.else |
| 40 | %cmp6 = icmp eq i8* %x, inttoptr (i64 2 to i8*) ; <i1> [#uses=1] |
| 41 | br i1 %cmp6, label %if.then9, label %lor.lhs.false |
| 42 | |
| 43 | lor.lhs.false: ; preds = %if.else4 |
| 44 | %cmp8 = icmp eq i8* %x, inttoptr (i64 3 to i8*) ; <i1> [#uses=1] |
| 45 | br i1 %cmp8, label %if.then9, label %if.else11 |
| 46 | |
| 47 | if.then9: ; preds = %lor.lhs.false, %if.else4 |
| 48 | %call10 = call i32 @puts(i8* getelementptr inbounds ([4 x i8]* @.str2, i64 0, i64 0)) nounwind ; <i32> [#uses=0] |
| 49 | br label %if.end19 |
| 50 | |
| 51 | if.else11: ; preds = %lor.lhs.false |
| 52 | %cmp13 = icmp eq i8* %x, inttoptr (i64 4 to i8*) ; <i1> [#uses=1] |
| 53 | br i1 %cmp13, label %if.then14, label %if.else16 |
| 54 | |
| 55 | if.then14: ; preds = %if.else11 |
| 56 | %call15 = call i32 @puts(i8* getelementptr inbounds ([5 x i8]* @.str3, i64 0, i64 0)) nounwind ; <i32> [#uses=0] |
| 57 | br label %if.end |
| 58 | |
| 59 | if.else16: ; preds = %if.else11 |
| 60 | %call18 = call i32 @puts(i8* %x) nounwind ; <i32> [#uses=0] |
| 61 | br label %if.end |
| 62 | |
| 63 | if.end: ; preds = %if.else16, %if.then14 |
| 64 | br label %if.end19 |
| 65 | |
| 66 | if.end19: ; preds = %if.end, %if.then9 |
| 67 | br label %if.end20 |
| 68 | |
| 69 | if.end20: ; preds = %if.end19, %if.then2 |
| 70 | br label %if.end21 |
| 71 | |
| 72 | if.end21: ; preds = %if.end20, %if.then |
| 73 | ret void |
| 74 | } |
| 75 | |
| 76 | declare i32 @puts(i8*) |