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getRawValue zero extens for unsigned values, use getsextvalue so that we
know that small negative values fit into the immediate field of addressing modes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24608 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -560,9 +560,9 @@ static bool isTargetConstant(const SCEVHandle &V) {
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// FIXME: Look at the target to decide if &GV is a legal constant immediate.
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if (SCEVConstant *SC = dyn_cast<SCEVConstant>(V)) {
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// PPC allows a sign-extended 16-bit immediate field.
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if ((int64_t)SC->getValue()->getRawValue() > -(1 << 16) &&
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(int64_t)SC->getValue()->getRawValue() < (1 << 16)-1)
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return true;
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int64_t V = SC->getValue()->getSExtValue();
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if (V > -(1 << 16) && V < (1 << 16)-1)
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return true;
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return false;
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}
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