forked from OSchip/llvm-project
28 lines
659 B
LLVM
28 lines
659 B
LLVM
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; RUN: opt -correlated-propagation -S %s | FileCheck %s
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; CHECK-LABEL: @test-ashr
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; CHECK: bb_then
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; CHECK: %. = select i1 true, i32 3, i32 2
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define i32 @test-ashr(i32 %c) {
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chk65:
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%cmp = icmp sgt i32 %c, 65
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br i1 %cmp, label %return, label %chk0
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chk0:
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%cmp1 = icmp slt i32 %c, 0
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br i1 %cmp, label %return, label %bb_if
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bb_if:
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%ashr.val = ashr exact i32 %c, 2
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%cmp2 = icmp sgt i32 %ashr.val, 15
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br i1 %cmp2, label %bb_then, label %return
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bb_then:
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%cmp3 = icmp eq i32 %ashr.val, 16
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%. = select i1 %cmp3, i32 3, i32 2
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br label %return
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return:
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%retval = phi i32 [0, %chk65], [1, %chk0], [%., %bb_then], [4, %bb_if]
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ret i32 %retval
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}
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