[X86] Correct the cost of (v4i32 (fptoui (v4f64))) under AVX512F.

[craig.topper]

Summary

This was inheriting the cost from the AVX table, but should be legal under AVX512.

[RKSimon]

LGTM

lib/Target/X86/X86TargetTransformInfo.cpp

static const TypeConversionCostTblEntry AVX512FConversionTbl[] = {
     { ISD::UINT_TO_FP,  MVT::v16f32, MVT::v16i32, 1 },
     { ISD::UINT_TO_FP,  MVT::v2f32,  MVT::v2i64,  5 },
     { ISD::UINT_TO_FP,  MVT::v2f64,  MVT::v2i64,  5 },
     { ISD::UINT_TO_FP,  MVT::v4f64,  MVT::v4i64, 12 },
     { ISD::UINT_TO_FP,  MVT::v8f64,  MVT::v8i64, 26 },
 
     { ISD::FP_TO_UINT,  MVT::v2i32,  MVT::v2f32,  1 },
     { ISD::FP_TO_UINT,  MVT::v4i32,  MVT::v4f32,  1 },
+    { ISD::FP_TO_UINT,  MVT::v4i32,  MVT::v4f64,  1 },
     { ISD::FP_TO_UINT,  MVT::v8i32,  MVT::v8f32,  1 },
     { ISD::FP_TO_UINT,  MVT::v8i16,  MVT::v8f64,  2 },
     { ISD::FP_TO_UINT,  MVT::v8i8,   MVT::v8f64,  2 },
     { ISD::FP_TO_UINT,  MVT::v16i32, MVT::v16f32, 1 },
     { ISD::FP_TO_UINT,  MVT::v16i16, MVT::v16f32, 2 },
     { ISD::FP_TO_UINT,  MVT::v16i8,  MVT::v16f32, 2 },
   };
 

test/Analysis/CostModel/X86/fptoui.ll

 ; AVX-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %V2I32 = fptoui <2 x double> undef to <2 x i32>
 ; AVX-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %V4I32 = fptoui <4 x double> undef to <4 x i32>
 ; AVX-NEXT:  Cost Model: Found an estimated cost of 33 for instruction: %V8I32 = fptoui <8 x double> undef to <8 x i32>
 ; AVX-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i32 undef
 ;
 ; AVX512F-LABEL: 'fptoui_double_i32'
 ; AVX512F-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %I32 = fptoui double undef to i32
 ; AVX512F-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %V2I32 = fptoui <2 x double> undef to <2 x i32>
-; AVX512F-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %V4I32 = fptoui <4 x double> undef to <4 x i32>
+; AVX512F-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V4I32 = fptoui <4 x double> undef to <4 x i32>
 ; AVX512F-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V8I32 = fptoui <8 x double> undef to <8 x i32>
 ; AVX512F-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i32 undef
 ;
 ; AVX512DQ-LABEL: 'fptoui_double_i32'
 ; AVX512DQ-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %I32 = fptoui double undef to i32
 ; AVX512DQ-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V2I32 = fptoui <2 x double> undef to <2 x i32>
-; AVX512DQ-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %V4I32 = fptoui <4 x double> undef to <4 x i32>
+; AVX512DQ-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V4I32 = fptoui <4 x double> undef to <4 x i32>
 ; AVX512DQ-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %V8I32 = fptoui <8 x double> undef to <8 x i32>
 ; AVX512DQ-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret i32 undef
 ;
 ; BTVER2-LABEL: 'fptoui_double_i32'
 ; BTVER2-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %I32 = fptoui double undef to i32
 ; BTVER2-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %V2I32 = fptoui <2 x double> undef to <2 x i32>
 ; BTVER2-NEXT:  Cost Model: Found an estimated cost of 16 for instruction: %V4I32 = fptoui <4 x double> undef to <4 x i32>
 ; BTVER2-NEXT:  Cost Model: Found an estimated cost of 33 for instruction: %V8I32 = fptoui <8 x double> undef to <8 x i32>