diff options
Diffstat (limited to 'llvm/lib/Target/ARM/ARMISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMISelLowering.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp index ade251d420e..a8e8e2dbdab 100644 --- a/llvm/lib/Target/ARM/ARMISelLowering.cpp +++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp @@ -1323,7 +1323,7 @@ bool ARMTargetLowering::isLegalAddressingMode(const AddrMode &AM, // This assumes i64 is legalized to a pair of i32. If not (i.e. // ldrd / strd are used, then its address mode is same as i16. // r + r - if (AM.Scale == 2) + if (AM.Scale == 1) return true; // r + r << imm if (!isPowerOf2_32(AM.Scale & ~1)) @@ -1422,7 +1422,9 @@ bool ARMTargetLowering::isLegalAddressScale(int64_t S, const Type *Ty) const { case MVT::i1: case MVT::i8: case MVT::i32: - // Allow: r + r + if (S < 0) S = -S; + if (S == 1) return true; // Allow: r + r + // Allow: r << imm // Allow: r + r << imm S &= ~1; @@ -1431,7 +1433,8 @@ bool ARMTargetLowering::isLegalAddressScale(int64_t S, const Type *Ty) const { // Note, we allow "void" uses (basically, uses that aren't loads or // stores), because arm allows folding a scale into many arithmetic // operations. This should be made more precise and revisited later. - + if (S == 1) return true; // Allow: r + r + // Allow r << imm, but the imm has to be a multiple of two. if (S & 1) return false; return isPowerOf2_32(S); |
