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b42c8f7101
and simplifycfg in the rare cases when it is needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44044 91177308-0d34-0410-b5e6-96231b3b80d8
101 lines
2.9 KiB
LLVM
101 lines
2.9 KiB
LLVM
; RUN: llvm-as < %s | opt -simplifycfg | llvm-dis | not grep bb17
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; PR1786
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define i32 @main() {
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entry:
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%retval = alloca i32, align 4 ; <i32*> [#uses=1]
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%i = alloca i32, align 4 ; <i32*> [#uses=7]
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%z = alloca i32, align 4 ; <i32*> [#uses=4]
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%z16 = alloca i32, align 4 ; <i32*> [#uses=4]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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store i32 0, i32* %i
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%toBool = icmp ne i8 1, 0 ; <i1> [#uses=1]
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br i1 %toBool, label %cond_true, label %cond_false
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cond_true: ; preds = %entry
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store i32 0, i32* %z
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br label %bb
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bb: ; preds = %cond_next, %cond_true
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%tmp = load i32* %z ; <i32> [#uses=1]
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%tmp1 = sub i32 %tmp, 16384 ; <i32> [#uses=1]
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store i32 %tmp1, i32* %z
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%tmp2 = load i32* %i ; <i32> [#uses=1]
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%tmp3 = add i32 %tmp2, 1 ; <i32> [#uses=1]
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store i32 %tmp3, i32* %i
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%tmp4 = load i32* %i ; <i32> [#uses=1]
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%tmp5 = icmp sgt i32 %tmp4, 262144 ; <i1> [#uses=1]
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%tmp56 = zext i1 %tmp5 to i8 ; <i8> [#uses=1]
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%toBool7 = icmp ne i8 %tmp56, 0 ; <i1> [#uses=1]
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br i1 %toBool7, label %cond_true8, label %cond_next
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cond_true8: ; preds = %bb
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call void @abort( )
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unreachable
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cond_next: ; preds = %bb
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%tmp9 = load i32* %z ; <i32> [#uses=1]
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%tmp10 = icmp ne i32 %tmp9, 0 ; <i1> [#uses=1]
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%tmp1011 = zext i1 %tmp10 to i8 ; <i8> [#uses=1]
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%toBool12 = icmp ne i8 %tmp1011, 0 ; <i1> [#uses=1]
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br i1 %toBool12, label %bb, label %bb13
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bb13: ; preds = %cond_next
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call void @exit( i32 0 )
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unreachable
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cond_false: ; preds = %entry
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%toBool14 = icmp ne i8 1, 0 ; <i1> [#uses=1]
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br i1 %toBool14, label %cond_true15, label %cond_false33
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cond_true15: ; preds = %cond_false
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store i32 0, i32* %z16
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br label %bb17
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bb17: ; preds = %cond_next27, %cond_true15
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%tmp18 = load i32* %z16 ; <i32> [#uses=1]
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%tmp19 = sub i32 %tmp18, 16384 ; <i32> [#uses=1]
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store i32 %tmp19, i32* %z16
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%tmp20 = load i32* %i ; <i32> [#uses=1]
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%tmp21 = add i32 %tmp20, 1 ; <i32> [#uses=1]
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store i32 %tmp21, i32* %i
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%tmp22 = load i32* %i ; <i32> [#uses=1]
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%tmp23 = icmp sgt i32 %tmp22, 262144 ; <i1> [#uses=1]
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%tmp2324 = zext i1 %tmp23 to i8 ; <i8> [#uses=1]
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%toBool25 = icmp ne i8 %tmp2324, 0 ; <i1> [#uses=1]
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br i1 %toBool25, label %cond_true26, label %cond_next27
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cond_true26: ; preds = %bb17
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call void @abort( )
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unreachable
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cond_next27: ; preds = %bb17
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%tmp28 = load i32* %z16 ; <i32> [#uses=1]
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%tmp29 = icmp ne i32 %tmp28, 0 ; <i1> [#uses=1]
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%tmp2930 = zext i1 %tmp29 to i8 ; <i8> [#uses=1]
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%toBool31 = icmp ne i8 %tmp2930, 0 ; <i1> [#uses=1]
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br i1 %toBool31, label %bb17, label %bb32
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bb32: ; preds = %cond_next27
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call void @exit( i32 0 )
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unreachable
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cond_false33: ; preds = %cond_false
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call void @exit( i32 0 )
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unreachable
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cond_next34: ; No predecessors!
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br label %cond_next35
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cond_next35: ; preds = %cond_next34
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br label %return
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return: ; preds = %cond_next35
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%retval36 = load i32* %retval ; <i32> [#uses=1]
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ret i32 %retval36
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}
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declare void @abort()
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declare void @exit(i32)
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