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Diffstat (limited to 'test/Transforms/SimplifyCFG/iterative-simplify.ll')
-rw-r--r-- | test/Transforms/SimplifyCFG/iterative-simplify.ll | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyCFG/iterative-simplify.ll b/test/Transforms/SimplifyCFG/iterative-simplify.ll new file mode 100644 index 0000000..a397411 --- /dev/null +++ b/test/Transforms/SimplifyCFG/iterative-simplify.ll @@ -0,0 +1,100 @@ +; 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* %z ; <i32> [#uses=1] + %tmp1 = sub i32 %tmp, 16384 ; <i32> [#uses=1] + store i32 %tmp1, i32* %z + %tmp2 = load i32* %i ; <i32> [#uses=1] + %tmp3 = add i32 %tmp2, 1 ; <i32> [#uses=1] + store i32 %tmp3, i32* %i + %tmp4 = load 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* %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* %z16 ; <i32> [#uses=1] + %tmp19 = sub i32 %tmp18, 16384 ; <i32> [#uses=1] + store i32 %tmp19, i32* %z16 + %tmp20 = load i32* %i ; <i32> [#uses=1] + %tmp21 = add i32 %tmp20, 1 ; <i32> [#uses=1] + store i32 %tmp21, i32* %i + %tmp22 = load 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* %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* %retval ; <i32> [#uses=1] + ret i32 %retval36 +} + +declare void @abort() + +declare void @exit(i32) |