[X86] Remove unneeded isel patterns from VCVTSI2SDZ and VCVTUSI2SDZ. NFC

We had patterns using X86ISD::SCALAR_SINT_TO_FP_RND/SCALAR_UINT_TO_FP_RND for
these instructions. There's nothing to round. Instead, we use a regular
sint_to_fp/uint_to_fp and a movsd as the pattern for these.

llvm-svn: 355796

diff --git a/llvm/lib/Target/X86/X86InstrAVX512.td b/llvm/lib/Target/X86/X86InstrAVX512.td
index ad4fd23..f7ae90a 100644 (file)
--- a/llvm/lib/Target/X86/X86InstrAVX512.td
+++ b/llvm/lib/Target/X86/X86InstrAVX512.td
@@ -7399,7 +7399,7 @@ defm VPMADD52HUQ : avx512_pmadd52_common<0xb5, "vpmadd52huq", x86vpmadd52h,
 // AVX-512  Scalar convert from sign integer to float/double
 //===----------------------------------------------------------------------===//
 
-multiclass avx512_vcvtsi<bits<8> opc, SDNode OpNode, X86FoldableSchedWrite sched,
+multiclass avx512_vcvtsi<bits<8> opc, SDPatternOperator OpNode, X86FoldableSchedWrite sched,
                     RegisterClass SrcRC, X86VectorVTInfo DstVT,
                     X86MemOperand x86memop, PatFrag ld_frag, string asm> {
   let hasSideEffects = 0 in {
@@ -7464,7 +7464,7 @@ defm VCVTSI2SSZ  : avx512_vcvtsi_common<0x2A, X86SintToFpRnd, WriteCvtI2SS, GR32
 defm VCVTSI642SSZ: avx512_vcvtsi_common<0x2A, X86SintToFpRnd, WriteCvtI2SS, GR64,
                                  v4f32x_info, i64mem, loadi64, "cvtsi2ss{q}">,
                                  XS, VEX_W, EVEX_CD8<64, CD8VT1>;
-defm VCVTSI2SDZ  : avx512_vcvtsi<0x2A, X86SintToFpRnd, WriteCvtI2SD, GR32,
+defm VCVTSI2SDZ  : avx512_vcvtsi<0x2A, null_frag, WriteCvtI2SD, GR32,
                                  v2f64x_info, i32mem, loadi32, "cvtsi2sd{l}">,
                                  XD, EVEX_CD8<32, CD8VT1>;
 defm VCVTSI642SDZ: avx512_vcvtsi_common<0x2A, X86SintToFpRnd, WriteCvtI2SD, GR64,
@@ -7500,7 +7500,7 @@ defm VCVTUSI2SSZ   : avx512_vcvtsi_common<0x7B, X86UintToFpRnd, WriteCvtI2SS, GR
 defm VCVTUSI642SSZ : avx512_vcvtsi_common<0x7B, X86UintToFpRnd, WriteCvtI2SS, GR64,
                                   v4f32x_info, i64mem, loadi64, "cvtusi2ss{q}">,
                                   XS, VEX_W, EVEX_CD8<64, CD8VT1>;
-defm VCVTUSI2SDZ   : avx512_vcvtsi<0x7B, X86UintToFpRnd, WriteCvtI2SD, GR32, v2f64x_info,
+defm VCVTUSI2SDZ   : avx512_vcvtsi<0x7B, null_frag, WriteCvtI2SD, GR32, v2f64x_info,
                                   i32mem, loadi32, "cvtusi2sd{l}">,
                                   XD, VEX_LIG, EVEX_CD8<32, CD8VT1>;
 defm VCVTUSI642SDZ : avx512_vcvtsi_common<0x7B, X86UintToFpRnd, WriteCvtI2SD, GR64,