51 lines
1.6 KiB
LLVM
51 lines
1.6 KiB
LLVM
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; This testcase was extracted from the gzip SPEC benchmark
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;
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; RUN: opt < %s -adce | FileCheck %s
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@bk = external global i32 ; <i32*> [#uses=2]
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@hufts = external global i32 ; <i32*> [#uses=1]
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define i32 @inflate() {
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bb0:
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br label %bb2
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bb2: ; preds = %bb6, %bb0
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%reg128 = phi i32 [ %reg130, %bb6 ], [ 0, %bb0 ] ; <i32> [#uses=2]
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br i1 true, label %bb4, label %bb3
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bb3: ; preds = %bb2
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br label %UnifiedExitNode
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; CHECK-NOT: bb4:
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; CHECK-NOT: bb5:
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bb4: ; preds = %bb2
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%reg117 = load i32, i32* @hufts ; <i32> [#uses=2]
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%cond241 = icmp ule i32 %reg117, %reg128 ; <i1> [#uses=1]
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br i1 %cond241, label %bb6, label %bb5
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bb5: ; preds = %bb4
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br label %bb6
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bb6: ; preds = %bb5, %bb4
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%reg130 = phi i32 [ %reg117, %bb5 ], [ %reg128, %bb4 ] ; <i32> [#uses=1]
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br i1 false, label %bb2, label %bb7
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bb7: ; preds = %bb6
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%reg126 = load i32, i32* @bk ; <i32> [#uses=1]
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%cond247 = icmp ule i32 %reg126, 7 ; <i1> [#uses=1]
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br i1 %cond247, label %bb9, label %bb8
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bb8: ; preds = %bb8, %bb7
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%reg119 = load i32, i32* @bk ; <i32> [#uses=1]
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%cond256 = icmp ugt i32 %reg119, 7 ; <i1> [#uses=1]
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br i1 %cond256, label %bb8, label %bb9
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bb9: ; preds = %bb8, %bb7
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br label %UnifiedExitNode
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UnifiedExitNode: ; preds = %bb9, %bb3
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%UnifiedRetVal = phi i32 [ 7, %bb3 ], [ 0, %bb9 ] ; <i32> [#uses=1]
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ret i32 %UnifiedRetVal
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}
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