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| author | Reid Kleckner <reid@kleckner.net> | 2015-03-11 23:36:10 +0000 |
|---|---|---|
| committer | Reid Kleckner <reid@kleckner.net> | 2015-03-11 23:36:10 +0000 |
| commit | 016c6b2104ec98fa186f5d46d3c29bfd9791feff (patch) | |
| tree | e71c1776fbaf9945e6db73a8dc773792e0efaa9d /llvm/lib/CodeGen/SelectionDAG/FastISel.cpp | |
| parent | ce2e77c771c8c564c7d37825b318a2195294bf8b (diff) | |
| download | bcm5719-llvm-016c6b2104ec98fa186f5d46d3c29bfd9791feff.tar.gz bcm5719-llvm-016c6b2104ec98fa186f5d46d3c29bfd9791feff.zip | |
Handle big index in getelementptr instruction
CodeGen incorrectly ignores (assert from APInt) constant index bigger
than 2^64 in getelementptr instruction. This is a test and fix for that.
Patch by Paweł Bylica!
Reviewed By: rnk
Subscribers: majnemer, rnk, mcrosier, resistor, llvm-commits
Differential Revision: http://reviews.llvm.org/D8219
llvm-svn: 231984
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/FastISel.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/FastISel.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp index faa36b038e7..16724b0af7e 100644 --- a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp @@ -497,7 +497,7 @@ bool FastISel::selectGetElementPtr(const User *I) { OI != E; ++OI) { const Value *Idx = *OI; if (auto *StTy = dyn_cast<StructType>(Ty)) { - unsigned Field = cast<ConstantInt>(Idx)->getZExtValue(); + uint64_t Field = cast<ConstantInt>(Idx)->getZExtValue(); if (Field) { // N = N + Offset TotalOffs += DL.getStructLayout(StTy)->getElementOffset(Field); @@ -518,8 +518,8 @@ bool FastISel::selectGetElementPtr(const User *I) { if (CI->isZero()) continue; // N = N + Offset - TotalOffs += - DL.getTypeAllocSize(Ty) * cast<ConstantInt>(CI)->getSExtValue(); + uint64_t IdxN = CI->getValue().sextOrTrunc(64).getSExtValue(); + TotalOffs += DL.getTypeAllocSize(Ty) * IdxN; if (TotalOffs >= MaxOffs) { N = fastEmit_ri_(VT, ISD::ADD, N, NIsKill, TotalOffs, VT); if (!N) // Unhandled operand. Halt "fast" selection and bail. |
