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- ; RUN: opt < %s -simplifycfg -S | not grep bb17
- ; PR1786
- define i32 @main() {
- entry:
- %retval = alloca i32, align 4 ; <i32*> [#uses=1]
- %i = alloca i32, align 4 ; <i32*> [#uses=7]
- %z = alloca i32, align 4 ; <i32*> [#uses=4]
- %z16 = alloca i32, align 4 ; <i32*> [#uses=4]
- %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
- store i32 0, i32* %i
- %toBool = icmp ne i8 1, 0 ; <i1> [#uses=1]
- br i1 %toBool, label %cond_true, label %cond_false
- cond_true: ; preds = %entry
- store i32 0, i32* %z
- br label %bb
- bb: ; preds = %cond_next, %cond_true
- %tmp = load i32, i32* %z ; <i32> [#uses=1]
- %tmp1 = sub i32 %tmp, 16384 ; <i32> [#uses=1]
- store i32 %tmp1, i32* %z
- %tmp2 = load i32, i32* %i ; <i32> [#uses=1]
- %tmp3 = add i32 %tmp2, 1 ; <i32> [#uses=1]
- store i32 %tmp3, i32* %i
- %tmp4 = load i32, i32* %i ; <i32> [#uses=1]
- %tmp5 = icmp sgt i32 %tmp4, 262144 ; <i1> [#uses=1]
- %tmp56 = zext i1 %tmp5 to i8 ; <i8> [#uses=1]
- %toBool7 = icmp ne i8 %tmp56, 0 ; <i1> [#uses=1]
- br i1 %toBool7, label %cond_true8, label %cond_next
- cond_true8: ; preds = %bb
- call void @abort( )
- unreachable
- cond_next: ; preds = %bb
- %tmp9 = load i32, i32* %z ; <i32> [#uses=1]
- %tmp10 = icmp ne i32 %tmp9, 0 ; <i1> [#uses=1]
- %tmp1011 = zext i1 %tmp10 to i8 ; <i8> [#uses=1]
- %toBool12 = icmp ne i8 %tmp1011, 0 ; <i1> [#uses=1]
- br i1 %toBool12, label %bb, label %bb13
- bb13: ; preds = %cond_next
- call void @exit( i32 0 )
- unreachable
- cond_false: ; preds = %entry
- %toBool14 = icmp ne i8 1, 0 ; <i1> [#uses=1]
- br i1 %toBool14, label %cond_true15, label %cond_false33
- cond_true15: ; preds = %cond_false
- store i32 0, i32* %z16
- br label %bb17
- bb17: ; preds = %cond_next27, %cond_true15
- %tmp18 = load i32, i32* %z16 ; <i32> [#uses=1]
- %tmp19 = sub i32 %tmp18, 16384 ; <i32> [#uses=1]
- store i32 %tmp19, i32* %z16
- %tmp20 = load i32, i32* %i ; <i32> [#uses=1]
- %tmp21 = add i32 %tmp20, 1 ; <i32> [#uses=1]
- store i32 %tmp21, i32* %i
- %tmp22 = load i32, i32* %i ; <i32> [#uses=1]
- %tmp23 = icmp sgt i32 %tmp22, 262144 ; <i1> [#uses=1]
- %tmp2324 = zext i1 %tmp23 to i8 ; <i8> [#uses=1]
- %toBool25 = icmp ne i8 %tmp2324, 0 ; <i1> [#uses=1]
- br i1 %toBool25, label %cond_true26, label %cond_next27
- cond_true26: ; preds = %bb17
- call void @abort( )
- unreachable
- cond_next27: ; preds = %bb17
- %tmp28 = load i32, i32* %z16 ; <i32> [#uses=1]
- %tmp29 = icmp ne i32 %tmp28, 0 ; <i1> [#uses=1]
- %tmp2930 = zext i1 %tmp29 to i8 ; <i8> [#uses=1]
- %toBool31 = icmp ne i8 %tmp2930, 0 ; <i1> [#uses=1]
- br i1 %toBool31, label %bb17, label %bb32
- bb32: ; preds = %cond_next27
- call void @exit( i32 0 )
- unreachable
- cond_false33: ; preds = %cond_false
- call void @exit( i32 0 )
- unreachable
- cond_next34: ; No predecessors!
- br label %cond_next35
- cond_next35: ; preds = %cond_next34
- br label %return
- return: ; preds = %cond_next35
- %retval36 = load i32, i32* %retval ; <i32> [#uses=1]
- ret i32 %retval36
- }
- declare void @abort()
- declare void @exit(i32)
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