diff options
| -rw-r--r-- | chromium/v8/src/compiler/arm/instruction-selector-arm.cc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/chromium/v8/src/compiler/arm/instruction-selector-arm.cc b/chromium/v8/src/compiler/arm/instruction-selector-arm.cc index 5279d1eec1e..9f3ee4636a5 100644 --- a/chromium/v8/src/compiler/arm/instruction-selector-arm.cc +++ b/chromium/v8/src/compiler/arm/instruction-selector-arm.cc @@ -725,6 +725,7 @@ void EmitBic(InstructionSelector* selector, Node* node, Node* left, void EmitUbfx(InstructionSelector* selector, Node* node, Node* left, uint32_t lsb, uint32_t width) { + DCHECK_LE(lsb, 31u); DCHECK_LE(1u, width); DCHECK_LE(width, 32u - lsb); ArmOperandGenerator g(selector); @@ -917,7 +918,7 @@ void InstructionSelector::VisitWord32Shr(Node* node) { uint32_t value = (mleft.right().Value() >> lsb) << lsb; uint32_t width = base::bits::CountPopulation32(value); uint32_t msb = base::bits::CountLeadingZeros32(value); - if (msb + width + lsb == 32) { + if ((width != 0) && (msb + width + lsb == 32)) { DCHECK_EQ(lsb, base::bits::CountTrailingZeros32(value)); return EmitUbfx(this, node, mleft.left().node(), lsb, width); } |