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21 lines
508 B
LLVM
21 lines
508 B
LLVM
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; RUN: opt < %s -instcombine -S | FileCheck %s
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; InstCombine should mark null-checked argument as nonnull at callsite
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declare void @dummy(i32*, i32)
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define void @test(i32* %a, i32 %b) {
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; CHECK-LABEL: @test
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; CHECK: call void @dummy(i32* nonnull %a, i32 %b)
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entry:
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%cond1 = icmp eq i32* %a, null
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br i1 %cond1, label %dead, label %not_null
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not_null:
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%cond2 = icmp eq i32 %b, 0
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br i1 %cond2, label %dead, label %not_zero
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not_zero:
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call void @dummy(i32* %a, i32 %b)
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ret void
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dead:
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unreachable
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}
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