Fix x86 sanitizer bot failures

ningxinr · ningxinr · commit 8a38d3f48be2 · 2025-08-28T20:28:06.000-07:00
diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
@@ -2627,9 +2627,9 @@ void AArch64TargetLowering::computeKnownBitsForTargetNode(
     break;
   }
   case AArch64ISD::MOVImsl: {
-    Known = KnownBits::makeConstant(
-        APInt(Known.getBitWidth(), ~(~Op->getConstantOperandVal(0)
-                                     << Op->getConstantOperandVal(1))));
+    auto ShiftAmt = AArch64_AM::getShiftValue(Op->getConstantOperandVal(1));
+    Known = KnownBits::makeConstant(APInt(
+        Known.getBitWidth(), ~(~Op->getConstantOperandVal(0) << ShiftAmt)));
     break;
   }
   case AArch64ISD::MOVIedit: {
@@ -2646,9 +2646,9 @@ void AArch64TargetLowering::computeKnownBitsForTargetNode(
     break;
   }
   case AArch64ISD::MVNImsl: {
+    auto ShiftAmt = AArch64_AM::getShiftValue(Op->getConstantOperandVal(1));
     Known = KnownBits::makeConstant(
-        APInt(Known.getBitWidth(),
-              (~Op->getConstantOperandVal(0) << Op->getConstantOperandVal(1)),
+        APInt(Known.getBitWidth(), (~Op->getConstantOperandVal(0) << ShiftAmt),
               /*isSigned*/ false, /*implicitTrunc*/ true));
     break;
   }

Original file line number	Diff line number	Diff line change
`@@ -2627,9 +2627,9 @@ void AArch64TargetLowering::computeKnownBitsForTargetNode(`
`2627`	`2627`	`break;`
`2628`	`2628`	`}`
`2629`	`2629`	`case AArch64ISD::MOVImsl: {`
`2630`		`- Known = KnownBits::makeConstant(`
`2631`		`- APInt(Known.getBitWidth(), ~(~Op->getConstantOperandVal(0)`
`2632`		`- << Op->getConstantOperandVal(1))));`
	`2630`	`+ auto ShiftAmt = AArch64_AM::getShiftValue(Op->getConstantOperandVal(1));`
	`2631`	`+ Known = KnownBits::makeConstant(APInt(`
	`2632`	`+ Known.getBitWidth(), ~(~Op->getConstantOperandVal(0) << ShiftAmt)));`
`2633`	`2633`	`break;`
`2634`	`2634`	`}`
`2635`	`2635`	`case AArch64ISD::MOVIedit: {`
`@@ -2646,9 +2646,9 @@ void AArch64TargetLowering::computeKnownBitsForTargetNode(`
`2646`	`2646`	`break;`
`2647`	`2647`	`}`
`2648`	`2648`	`case AArch64ISD::MVNImsl: {`
	`2649`	`+ auto ShiftAmt = AArch64_AM::getShiftValue(Op->getConstantOperandVal(1));`
`2649`	`2650`	`Known = KnownBits::makeConstant(`
`2650`		`- APInt(Known.getBitWidth(),`
`2651`		`- (~Op->getConstantOperandVal(0) << Op->getConstantOperandVal(1)),`
	`2651`	`+ APInt(Known.getBitWidth(), (~Op->getConstantOperandVal(0) << ShiftAmt),`
`2652`	`2652`	`/isSigned/ false, /implicitTrunc/ true));`
`2653`	`2653`	`break;`
`2654`	`2654`	`}`