diff options
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index ade69220c4c..18d0cf04c46 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -8020,9 +8020,10 @@ SDValue createVariablePermute(MVT VT, SDValue SrcVec, SDValue IndicesVec, uint64_t IndexOffset = 0; // If we're scaling a smaller permute op, then we need to repeat the - // indices, scaling and offsetting them as well. e.g. v4i32 -> v16i8 (Scale - // = 4) IndexScale = v4i32 Splat(4 << 24 | 4 << 16 | 4 << 8 | 4) indexOffset - // = v4i32 Splat(3 << 24 | 2 << 16 | 1 << 8 | 0) + // indices, scaling and offsetting them as well. + // e.g. v4i32 -> v16i8 (Scale = 4) + // IndexScale = v4i32 Splat(4 << 24 | 4 << 16 | 4 << 8 | 4) + // IndexOffset = v4i32 Splat(3 << 24 | 2 << 16 | 1 << 8 | 0) for (uint64_t i = 0; i != Scale; ++i) { IndexScale |= Scale << (i * ShuffleBits); IndexOffset |= i << (i * ShuffleBits); |
