56 lines
1.2 KiB
LLVM
56 lines
1.2 KiB
LLVM
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; RUN: opt < %s -gvn-sink -S | FileCheck %s
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; Check that nonnull metadata for non-dominating loads is not propagated.
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; CHECK-LABEL: @test1(
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; CHECK-LABEL: if.end:
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; CHECK: %[[ptr:.*]] = phi i32**
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; CHECK: %[[load:.*]] = load i32*, i32** %[[ptr]]
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; CHECK-NOT: !nonnull
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; CHECK: ret i32* %[[load]]
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define i32* @test1(i1 zeroext %flag, i32*** %p) {
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entry:
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br i1 %flag, label %if.then, label %if.else
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if.then:
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%a = load i32**, i32*** %p
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%aa = load i32*, i32** %a, !nonnull !0
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br label %if.end
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if.else:
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%b = load i32**, i32*** %p
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%bb= load i32*, i32** %b
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br label %if.end
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if.end:
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%c = phi i32* [ %aa, %if.then ], [ %bb, %if.else ]
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ret i32* %c
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}
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; CHECK-LABEL: @test2(
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; CHECK-LABEL: if.end:
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; CHECK: %[[ptr:.*]] = phi i32**
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; CHECK: %[[load:.*]] = load i32*, i32** %[[ptr]]
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; CHECK-NOT: !nonnull
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; CHECK: ret i32* %[[load]]
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define i32* @test2(i1 zeroext %flag, i32*** %p) {
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entry:
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br i1 %flag, label %if.then, label %if.else
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if.then:
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%a = load i32**, i32*** %p
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%aa = load i32*, i32** %a
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br label %if.end
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if.else:
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%b = load i32**, i32*** %p
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%bb= load i32*, i32** %b, !nonnull !0
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br label %if.end
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if.end:
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%c = phi i32* [ %aa, %if.then ], [ %bb, %if.else ]
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ret i32* %c
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}
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!0 = !{}
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