Changes in directory llvm/lib/CodeGen/SelectionDAG:
TargetLowering.cpp updated: 1.114 -> 1.115
---
Log message:
disable MaskedValueIsZero, ComputeMaskedBits, and SimplifyDemandedBits for
i128 integers. The 64-bit masks are not wide enough to represent the results.
These should be converted to APInt someday.
---
Diffs of the changes: (+13 -0)
TargetLowering.cpp | 13 +++++++++++++
1 files changed, 13 insertions(+)
Index: llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp:1.114
llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp:1.115
--- llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp:1.114 Wed May 16
18:45:53 2007
+++ llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp Thu May 17 13:19:23 2007
@@ -365,6 +365,11 @@
TargetLoweringOpt &TLO,
unsigned Depth) const {
KnownZero = KnownOne = 0; // Don't know anything.
+
+ // The masks are not wide enough to represent this type! Should use APInt.
+ if (Op.getValueType() == MVT::i128)
+ return false;
+
// Other users may use these bits.
if (!Op.Val->hasOneUse()) {
if (Depth != 0) {
@@ -874,6 +879,10 @@
/// for bits that V cannot have.
bool TargetLowering::MaskedValueIsZero(SDOperand Op, uint64_t Mask,
unsigned Depth) const {
+ // The masks are not wide enough to represent this type! Should use APInt.
+ if (Op.getValueType() == MVT::i128)
+ return false;
+
uint64_t KnownZero, KnownOne;
ComputeMaskedBits(Op, Mask, KnownZero, KnownOne, Depth);
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
@@ -891,6 +900,10 @@
if (Depth == 6 || Mask == 0)
return; // Limit search depth.
+ // The masks are not wide enough to represent this type! Should use APInt.
+ if (Op.getValueType() == MVT::i128)
+ return;
+
uint64_t KnownZero2, KnownOne2;
switch (Op.getOpcode()) {
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