Changed getSOImmValRotate()'s hunt retry logic to ignore the low order 6 bits,
instead of 7, because we are only looking for even rotate amount.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101172 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMAddressingModes.h b/lib/Target/ARM/ARMAddressingModes.h
index f414744..e68354a 100644
--- a/lib/Target/ARM/ARMAddressingModes.h
+++ b/lib/Target/ARM/ARMAddressingModes.h
@@ -151,10 +151,10 @@
if ((rotr32(Imm, RotAmt) & ~255U) == 0)
return (32-RotAmt)&31; // HW rotates right, not left.
- // For values like 0xF000000F, we should ignore the low 7 bits, then
+ // For values like 0xF000000F, we should ignore the low 6 bits, then
// retry the hunt.
- if (Imm & 127U) {
- unsigned TZ2 = CountTrailingZeros_32(Imm & ~127U);
+ if (Imm & 63U) {
+ unsigned TZ2 = CountTrailingZeros_32(Imm & ~63U);
unsigned RotAmt2 = TZ2 & ~1;
if ((rotr32(Imm, RotAmt2) & ~255U) == 0)
return (32-RotAmt2)&31; // HW rotates right, not left.