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UseListOrder: Handle self-users

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Correctly sort self-users (such as PHI nodes).  I added a targeted test
in `test/Bitcode/use-list-order.ll` and the final missing RUN line to
tests in `test/Assembly`.

This is part of PR5680.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214417 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2014-07-31 18:33:12 +00:00
parent 5dbbe4adbe
commit 9d65d3717c
3 changed files with 17 additions and 3 deletions
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lib/Bitcode/Writer/ValueEnumerator.cpp
+3 -3
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@@ -166,13 +166,13 @@ static void predictValueUseListOrderImpl(const Value *V, const Function *F,
// If ID is 4, then expect: 7 6 5 1 2 3.
if (LID < RID) {
if (RID < ID)
if (RID <= ID)
if (!IsGlobalValue) // GlobalValue uses don't get reversed.
return true;
return false;
}
if (RID < LID) {
if (LID < ID)
if (LID <= ID)
if (!IsGlobalValue) // GlobalValue uses don't get reversed.
return false;
return true;
@@ -180,7 +180,7 @@ static void predictValueUseListOrderImpl(const Value *V, const Function *F,
// LID and RID are equal, so we have different operands of the same user.
// Assume operands are added in order for all instructions.
if (LID < ID)
if (LID <= ID)
if (!IsGlobalValue) // GlobalValue uses don't get reversed.
return LU->getOperandNo() < RU->getOperandNo();
return LU->getOperandNo() > RU->getOperandNo();