1 ; RUN: opt < %s -basicaa -gvn -S | grep strlen | count 2 2 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" 3 target triple = "i386-apple-darwin9" 4 5 define i32 @test(i32 %g, i8* %P) nounwind { 6 entry: 7 %tmp2 = call i32 @strlen( i8* %P ) nounwind readonly ; <i32> [#uses=1] 8 %tmp3 = icmp eq i32 %tmp2, 100 ; <i1> [#uses=1] 9 %tmp34 = zext i1 %tmp3 to i8 ; <i8> [#uses=1] 10 %toBool = icmp ne i8 %tmp34, 0 ; <i1> [#uses=1] 11 br i1 %toBool, label %bb, label %bb6 12 13 bb: ; preds = %entry 14 br label %bb27 15 16 bb6: ; preds = %entry 17 %tmp8 = add i32 %g, 42 ; <i32> [#uses=2] 18 %tmp10 = call i32 @strlen( i8* %P ) nounwind readonly ; <i32> [#uses=1] 19 %tmp11 = icmp eq i32 %tmp10, 100 ; <i1> [#uses=1] 20 %tmp1112 = zext i1 %tmp11 to i8 ; <i8> [#uses=1] 21 %toBool13 = icmp ne i8 %tmp1112, 0 ; <i1> [#uses=1] 22 br i1 %toBool13, label %bb14, label %bb16 23 24 bb14: ; preds = %bb6 25 br label %bb27 26 27 bb16: ; preds = %bb6 28 %tmp18 = mul i32 %tmp8, 2 ; <i32> [#uses=1] 29 %tmp20 = call i32 @strlen( i8* %P ) nounwind readonly ; <i32> [#uses=1] 30 %tmp21 = icmp eq i32 %tmp20, 100 ; <i1> [#uses=1] 31 %tmp2122 = zext i1 %tmp21 to i8 ; <i8> [#uses=1] 32 %toBool23 = icmp ne i8 %tmp2122, 0 ; <i1> [#uses=1] 33 br i1 %toBool23, label %bb24, label %bb26 34 35 bb24: ; preds = %bb16 36 br label %bb27 37 38 bb26: ; preds = %bb16 39 br label %bb27 40 41 bb27: ; preds = %bb26, %bb24, %bb14, %bb 42 %tmp.0 = phi i32 [ 11, %bb26 ], [ %tmp18, %bb24 ], [ %tmp8, %bb14 ], [ %g, %bb ] ; <i32> [#uses=1] 43 br label %return 44 45 return: ; preds = %bb27 46 ret i32 %tmp.0 47 } 48 49 declare i32 @strlen(i8*) nounwind readonly 50
