forked from OSchip/llvm-project
ARM cost model: Make some vector integer to float casts cheaper
The default logic marks them as too expensive. For example, before this patch we estimated: cost of 16 for instruction: %r = uitofp <4 x i16> %v0 to <4 x float> While this translates to: vmovl.u16 q8, d16 vcvt.f32.u32 q8, q8 All other costs are left to the values assigned by the fallback logic. Theses costs are mostly reasonable in the sense that they get progressively more expensive as the instruction sequences emitted get longer. radar://13445992 llvm-svn: 177334
This commit is contained in:
Arnold Schwaighofer
parent
6c9c3a8b99
commit
ae0052f114
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@ -222,6 +222,28 @@ unsigned ARMTTI::getCastInstrCost(unsigned Opcode, Type *Dst,
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// Vector float <-> i32 conversions.
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{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i32, 1 },
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{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i32, 1 },
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{ ISD::SINT_TO_FP, MVT::v2f32, MVT::v2i8, 3 },
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{ ISD::UINT_TO_FP, MVT::v2f32, MVT::v2i8, 3 },
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{ ISD::SINT_TO_FP, MVT::v2f32, MVT::v2i16, 2 },
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{ ISD::UINT_TO_FP, MVT::v2f32, MVT::v2i16, 2 },
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{ ISD::SINT_TO_FP, MVT::v2f32, MVT::v2i32, 1 },
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{ ISD::UINT_TO_FP, MVT::v2f32, MVT::v2i32, 1 },
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{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i1, 3 },
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{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i1, 3 },
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{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i8, 3 },
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{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i8, 3 },
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{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i16, 2 },
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{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i16, 2 },
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{ ISD::SINT_TO_FP, MVT::v8f32, MVT::v8i16, 4 },
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{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i16, 4 },
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{ ISD::SINT_TO_FP, MVT::v8f32, MVT::v8i32, 2 },
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{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i32, 2 },
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{ ISD::SINT_TO_FP, MVT::v16f32, MVT::v16i16, 8 },
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{ ISD::UINT_TO_FP, MVT::v16f32, MVT::v16i16, 8 },
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{ ISD::SINT_TO_FP, MVT::v16f32, MVT::v16i32, 4 },
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{ ISD::UINT_TO_FP, MVT::v16f32, MVT::v16i32, 4 },
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{ ISD::FP_TO_SINT, MVT::v4i32, MVT::v4f32, 1 },
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{ ISD::FP_TO_UINT, MVT::v4i32, MVT::v4f32, 1 },
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{ ISD::FP_TO_SINT, MVT::v4i8, MVT::v4f32, 3 },
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@ -232,6 +254,14 @@ unsigned ARMTTI::getCastInstrCost(unsigned Opcode, Type *Dst,
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// Vector double <-> i32 conversions.
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{ ISD::SINT_TO_FP, MVT::v2f64, MVT::v2i32, 2 },
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{ ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i32, 2 },
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{ ISD::SINT_TO_FP, MVT::v2f64, MVT::v2i8, 4 },
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{ ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i8, 4 },
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{ ISD::SINT_TO_FP, MVT::v2f64, MVT::v2i16, 3 },
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{ ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i16, 3 },
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{ ISD::SINT_TO_FP, MVT::v2f64, MVT::v2i32, 2 },
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{ ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i32, 2 },
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{ ISD::FP_TO_SINT, MVT::v2i32, MVT::v2f64, 2 },
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{ ISD::FP_TO_UINT, MVT::v2i32, MVT::v2f64, 2 },
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{ ISD::FP_TO_SINT, MVT::v8i16, MVT::v8f32, 4 },
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@ -359,6 +359,174 @@ define i32 @casts() {
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; CHECK: cost of 192 {{.*}} fptosi
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%r169 = fptosi <16 x double> undef to <16 x i64>
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; CHECK: cost of 8 {{.*}} uitofp
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%r170 = uitofp <2 x i1> undef to <2 x float>
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; CHECK: cost of 8 {{.*}} sitofp
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%r171 = sitofp <2 x i1> undef to <2 x float>
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; CHECK: cost of 3 {{.*}} uitofp
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%r172 = uitofp <2 x i8> undef to <2 x float>
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; CHECK: cost of 3 {{.*}} sitofp
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%r173 = sitofp <2 x i8> undef to <2 x float>
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; CHECK: cost of 2 {{.*}} uitofp
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%r174 = uitofp <2 x i16> undef to <2 x float>
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; CHECK: cost of 2 {{.*}} sitofp
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%r175 = sitofp <2 x i16> undef to <2 x float>
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; CHECK: cost of 1 {{.*}} uitofp
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%r176 = uitofp <2 x i32> undef to <2 x float>
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; CHECK: cost of 1 {{.*}} sitofp
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%r177 = sitofp <2 x i32> undef to <2 x float>
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; CHECK: cost of 24 {{.*}} uitofp
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%r178 = uitofp <2 x i64> undef to <2 x float>
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; CHECK: cost of 24 {{.*}} sitofp
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%r179 = sitofp <2 x i64> undef to <2 x float>
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; CHECK: cost of 8 {{.*}} uitofp
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%r180 = uitofp <2 x i1> undef to <2 x double>
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; CHECK: cost of 8 {{.*}} sitofp
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%r181 = sitofp <2 x i1> undef to <2 x double>
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; CHECK: cost of 4 {{.*}} uitofp
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%r182 = uitofp <2 x i8> undef to <2 x double>
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; CHECK: cost of 4 {{.*}} sitofp
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%r183 = sitofp <2 x i8> undef to <2 x double>
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; CHECK: cost of 3 {{.*}} uitofp
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%r184 = uitofp <2 x i16> undef to <2 x double>
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; CHECK: cost of 3 {{.*}} sitofp
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%r185 = sitofp <2 x i16> undef to <2 x double>
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; CHECK: cost of 2 {{.*}} uitofp
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%r186 = uitofp <2 x i32> undef to <2 x double>
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; CHECK: cost of 2 {{.*}} sitofp
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%r187 = sitofp <2 x i32> undef to <2 x double>
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; CHECK: cost of 24 {{.*}} uitofp
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%r188 = uitofp <2 x i64> undef to <2 x double>
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; CHECK: cost of 24 {{.*}} sitofp
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%r189 = sitofp <2 x i64> undef to <2 x double>
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; CHECK: cost of 3 {{.*}} uitofp
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%r190 = uitofp <4 x i1> undef to <4 x float>
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; CHECK: cost of 3 {{.*}} sitofp
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%r191 = sitofp <4 x i1> undef to <4 x float>
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; CHECK: cost of 3 {{.*}} uitofp
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%r192 = uitofp <4 x i8> undef to <4 x float>
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; CHECK: cost of 3 {{.*}} sitofp
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%r193 = sitofp <4 x i8> undef to <4 x float>
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; CHECK: cost of 2 {{.*}} uitofp
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%r194 = uitofp <4 x i16> undef to <4 x float>
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; CHECK: cost of 2 {{.*}} sitofp
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%r195 = sitofp <4 x i16> undef to <4 x float>
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; CHECK: cost of 1 {{.*}} uitofp
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%r196 = uitofp <4 x i32> undef to <4 x float>
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; CHECK: cost of 1 {{.*}} sitofp
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%r197 = sitofp <4 x i32> undef to <4 x float>
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; CHECK: cost of 48 {{.*}} uitofp
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%r198 = uitofp <4 x i64> undef to <4 x float>
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; CHECK: cost of 48 {{.*}} sitofp
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%r199 = sitofp <4 x i64> undef to <4 x float>
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; CHECK: cost of 16 {{.*}} uitofp
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%r200 = uitofp <4 x i1> undef to <4 x double>
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; CHECK: cost of 16 {{.*}} sitofp
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%r201 = sitofp <4 x i1> undef to <4 x double>
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; CHECK: cost of 16 {{.*}} uitofp
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%r202 = uitofp <4 x i8> undef to <4 x double>
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; CHECK: cost of 16 {{.*}} sitofp
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%r203 = sitofp <4 x i8> undef to <4 x double>
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; CHECK: cost of 16 {{.*}} uitofp
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%r204 = uitofp <4 x i16> undef to <4 x double>
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; CHECK: cost of 16 {{.*}} sitofp
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%r205 = sitofp <4 x i16> undef to <4 x double>
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; CHECK: cost of 16 {{.*}} uitofp
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%r206 = uitofp <4 x i32> undef to <4 x double>
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; CHECK: cost of 16 {{.*}} sitofp
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%r207 = sitofp <4 x i32> undef to <4 x double>
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; CHECK: cost of 48 {{.*}} uitofp
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%r208 = uitofp <4 x i64> undef to <4 x double>
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; CHECK: cost of 48 {{.*}} sitofp
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%r209 = sitofp <4 x i64> undef to <4 x double>
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; CHECK: cost of 32 {{.*}} uitofp
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%r210 = uitofp <8 x i1> undef to <8 x float>
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; CHECK: cost of 32 {{.*}} sitofp
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%r211 = sitofp <8 x i1> undef to <8 x float>
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; CHECK: cost of 32 {{.*}} uitofp
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%r212 = uitofp <8 x i8> undef to <8 x float>
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; CHECK: cost of 32 {{.*}} sitofp
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%r213 = sitofp <8 x i8> undef to <8 x float>
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; CHECK: cost of 4 {{.*}} uitofp
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%r214 = uitofp <8 x i16> undef to <8 x float>
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; CHECK: cost of 4 {{.*}} sitofp
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%r215 = sitofp <8 x i16> undef to <8 x float>
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; CHECK: cost of 2 {{.*}} uitofp
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%r216 = uitofp <8 x i32> undef to <8 x float>
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; CHECK: cost of 2 {{.*}} sitofp
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%r217 = sitofp <8 x i32> undef to <8 x float>
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; CHECK: cost of 96 {{.*}} uitofp
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%r218 = uitofp <8 x i64> undef to <8 x float>
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; CHECK: cost of 96 {{.*}} sitofp
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%r219 = sitofp <8 x i64> undef to <8 x float>
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; CHECK: cost of 32 {{.*}} uitofp
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%r220 = uitofp <8 x i1> undef to <8 x double>
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; CHECK: cost of 32 {{.*}} sitofp
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%r221 = sitofp <8 x i1> undef to <8 x double>
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; CHECK: cost of 32 {{.*}} uitofp
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%r222 = uitofp <8 x i8> undef to <8 x double>
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; CHECK: cost of 32 {{.*}} sitofp
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%r223 = sitofp <8 x i8> undef to <8 x double>
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; CHECK: cost of 32 {{.*}} uitofp
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%r224 = uitofp <8 x i16> undef to <8 x double>
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; CHECK: cost of 32 {{.*}} sitofp
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%r225 = sitofp <8 x i16> undef to <8 x double>
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; CHECK: cost of 32 {{.*}} uitofp
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%r226 = uitofp <8 x i16> undef to <8 x double>
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; CHECK: cost of 32 {{.*}} sitofp
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%r227 = sitofp <8 x i16> undef to <8 x double>
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; CHECK: cost of 96 {{.*}} uitofp
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%r228 = uitofp <8 x i64> undef to <8 x double>
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; CHECK: cost of 96 {{.*}} sitofp
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%r229 = sitofp <8 x i64> undef to <8 x double>
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; CHECK: cost of 64 {{.*}} uitofp
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%r230 = uitofp <16 x i1> undef to <16 x float>
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; CHECK: cost of 64 {{.*}} sitofp
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%r231 = sitofp <16 x i1> undef to <16 x float>
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; CHECK: cost of 64 {{.*}} uitofp
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%r232 = uitofp <16 x i8> undef to <16 x float>
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; CHECK: cost of 64 {{.*}} sitofp
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%r233 = sitofp <16 x i8> undef to <16 x float>
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; CHECK: cost of 8 {{.*}} uitofp
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%r234 = uitofp <16 x i16> undef to <16 x float>
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; CHECK: cost of 8 {{.*}} sitofp
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%r235 = sitofp <16 x i16> undef to <16 x float>
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; CHECK: cost of 4 {{.*}} uitofp
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%r236 = uitofp <16 x i32> undef to <16 x float>
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; CHECK: cost of 4 {{.*}} sitofp
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%r237 = sitofp <16 x i32> undef to <16 x float>
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; CHECK: cost of 192 {{.*}} uitofp
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%r238 = uitofp <16 x i64> undef to <16 x float>
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; CHECK: cost of 192 {{.*}} sitofp
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%r239 = sitofp <16 x i64> undef to <16 x float>
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; CHECK: cost of 64 {{.*}} uitofp
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%r240 = uitofp <16 x i1> undef to <16 x double>
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; CHECK: cost of 64 {{.*}} sitofp
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%r241 = sitofp <16 x i1> undef to <16 x double>
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; CHECK: cost of 64 {{.*}} uitofp
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%r242 = uitofp <16 x i8> undef to <16 x double>
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; CHECK: cost of 64 {{.*}} sitofp
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%r243 = sitofp <16 x i8> undef to <16 x double>
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; C4ECK: cost of 64 {{.*}} uitofp
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%r244 = uitofp <16 x i16> undef to <16 x double>
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; CHECK: cost of 64 {{.*}} sitofp
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%r245 = sitofp <16 x i16> undef to <16 x double>
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; CHECK: cost of 64 {{.*}} uitofp
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%r246 = uitofp <16 x i16> undef to <16 x double>
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; CHECK: cost of 64 {{.*}} sitofp
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%r247 = sitofp <16 x i16> undef to <16 x double>
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; CHECK: cost of 192 {{.*}} uitofp
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%r248 = uitofp <16 x i64> undef to <16 x double>
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; CHECK: cost of 192 {{.*}} sitofp
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%r249 = sitofp <16 x i64> undef to <16 x double>
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;CHECK: cost of 0 {{.*}} ret
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ret i32 undef
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}
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