diff options
Diffstat (limited to 'lib/Target/PowerPC/PPCInstrVSX.td')
| -rw-r--r-- | lib/Target/PowerPC/PPCInstrVSX.td | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/PPCInstrVSX.td b/lib/Target/PowerPC/PPCInstrVSX.td index 9fdfacfb0e..baf07cbe7b 100644 --- a/lib/Target/PowerPC/PPCInstrVSX.td +++ b/lib/Target/PowerPC/PPCInstrVSX.td @@ -791,6 +791,18 @@ def : Pat<(v2f64 (bitconvert v2i64:$A)), def : Pat<(v2i64 (bitconvert v2f64:$A)), (COPY_TO_REGCLASS $A, VRRC)>; +// sign extension patterns +// To extend "in place" from v2i32 to v2i64, we have input data like: +// | undef | i32 | undef | i32 | +// but xvcvsxwdp expects the input in big-Endian format: +// | i32 | undef | i32 | undef | +// so we need to shift everything to the left by one i32 (word) before +// the conversion. +def : Pat<(sext_inreg v2i64:$C, v2i32), + (XVCVDPSXDS (XVCVSXWDP (XXSLDWI $C, $C, 1)))>; +def : Pat<(v2f64 (sint_to_fp (sext_inreg v2i64:$C, v2i32))), + (XVCVSXWDP (XXSLDWI $C, $C, 1))>; + } // AddedComplexity } // HasVSX |