diff --git a/lib/Target/X86/X86InstrSSE.td b/lib/Target/X86/X86InstrSSE.td index 79c54295d2e..e4e92ccbf14 100644 --- a/lib/Target/X86/X86InstrSSE.td +++ b/lib/Target/X86/X86InstrSSE.td @@ -5775,6 +5775,12 @@ def : Pat<(v4i32 (X86Movlps VR128:$src1, (load addr:$src2))), def : Pat<(X86Movlps VR128:$src1, (bc_v4f32 (v2f64 (scalar_to_vector (loadf64 addr:$src2))))), (MOVLPSrm VR128:$src1, addr:$src2)>; +// FIXME: Instead of a X86Movlps there should be a X86Movsd here, the problem +// is during lowering, where it's not possible to recognize the load fold cause +// it has two uses through a bitcast. One use disappears at isel time and the +// fold opportunity reappears. +def : Pat<(v4f32 (X86Movlps VR128:$src1, VR128:$src2)), + (MOVSDrr VR128:$src1, (EXTRACT_SUBREG (v4f32 VR128:$src2), sub_sd))>; // Shuffle with MOVLPD def : Pat<(v2f64 (X86Movlpd VR128:$src1, (load addr:$src2))),