56 lines
2.1 KiB
Diff
56 lines
2.1 KiB
Diff
From 7801978ec1f3637fcda1b564048ebc732bf586af Mon Sep 17 00:00:00 2001
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From: Simonas Kazlauskas <git@kazlauskas.me>
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Date: Fri, 16 Sep 2016 00:32:20 +0300
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Subject: [rust-lang/llvm#51] Backport rL281650
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---
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lib/Transforms/InstCombine/InstCombineCompares.cpp | 2 +-
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test/Transforms/InstCombine/indexed-gep-compares.ll | 20 ++++++++++++++++++++
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2 files changed, 21 insertions(+), 1 deletion(-)
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diff --git a/lib/Transforms/InstCombine/InstCombineCompares.cpp b/lib/Transforms/InstCombine/InstCombineCompares.cpp
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index bfd73f4bbac5..961497fe3c2d 100644
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--- a/lib/Transforms/InstCombine/InstCombineCompares.cpp
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+++ b/lib/Transforms/InstCombine/InstCombineCompares.cpp
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@@ -634,7 +634,7 @@ static bool canRewriteGEPAsOffset(Value *Start, Value *Base,
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}
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if (!isa<IntToPtrInst>(V) && !isa<PtrToIntInst>(V) &&
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- !isa<GEPOperator>(V) && !isa<PHINode>(V))
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+ !isa<GetElementPtrInst>(V) && !isa<PHINode>(V))
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// We've found some value that we can't explore which is different from
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// the base. Therefore we can't do this transformation.
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return false;
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diff --git a/test/Transforms/InstCombine/indexed-gep-compares.ll b/test/Transforms/InstCombine/indexed-gep-compares.ll
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index 495881549e25..64dff2712976 100644
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--- a/test/Transforms/InstCombine/indexed-gep-compares.ll
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+++ b/test/Transforms/InstCombine/indexed-gep-compares.ll
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@@ -167,4 +167,24 @@ lpad:
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; CHECK: ret i32* %[[PTR]]
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}
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+
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+@pr30402 = constant i64 3
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+define i1 @test7() {
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+entry:
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+ br label %bb7
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+
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+bb7: ; preds = %bb10, %entry-block
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+ %phi = phi i64* [ @pr30402, %entry ], [ getelementptr inbounds (i64, i64* @pr30402, i32 1), %bb7 ]
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+ %cmp = icmp eq i64* %phi, getelementptr inbounds (i64, i64* @pr30402, i32 1)
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+ br i1 %cmp, label %bb10, label %bb7
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+
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+bb10:
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+ ret i1 %cmp
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+}
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+; CHECK-LABEL: @test7(
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+; CHECK: %[[phi:.*]] = phi i64* [ @pr30402, %entry ], [ getelementptr inbounds (i64, i64* @pr30402, i32 1), %bb7 ]
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+; CHECK: %[[cmp:.*]] = icmp eq i64* %[[phi]], getelementptr inbounds (i64, i64* @pr30402, i32 1)
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+; CHECK: ret i1 %[[cmp]]
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+
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+
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declare i32 @__gxx_personality_v0(...)
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--
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2.7.4
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