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X86TTI: Add accurate costs for itofp operations, based on the actual instruction counts.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178459 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2013-04-01 10:23:49 +00:00
parent ef7964c1b7
commit 13497b3aa7
3 changed files with 106 additions and 9 deletions
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31
lib/Target/X86/X86TargetTransformInfo.cpp
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@ -271,10 +271,33 @@ unsigned X86TTI::getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src) const {
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i32, 1 },
{ ISD::TRUNCATE, MVT::v4i32, MVT::v4i64, 1 },
{ ISD::TRUNCATE, MVT::v8i16, MVT::v8i32, 1 },
{ ISD::SINT_TO_FP, MVT::v8f32, MVT::v8i8, 1 },
{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i8, 1 },
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i8, 1 },
{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i8, 1 },
{ ISD::SINT_TO_FP, MVT::v8f32, MVT::v8i1, 8 },
{ ISD::SINT_TO_FP, MVT::v8f32, MVT::v8i8, 8 },
{ ISD::SINT_TO_FP, MVT::v8f32, MVT::v8i16, 5 },
{ ISD::SINT_TO_FP, MVT::v8f32, MVT::v8i32, 1 },
{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i1, 3 },
{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i8, 3 },
{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i16, 3 },
{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i32, 1 },
{ ISD::SINT_TO_FP, MVT::v4f64, MVT::v4i1, 3 },
{ ISD::SINT_TO_FP, MVT::v4f64, MVT::v4i8, 3 },
{ ISD::SINT_TO_FP, MVT::v4f64, MVT::v4i16, 3 },
{ ISD::SINT_TO_FP, MVT::v4f64, MVT::v4i32, 1 },
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i1, 6 },
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i8, 5 },
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i16, 5 },
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i32, 9 },
{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i1, 7 },
{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i8, 2 },
{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i16, 2 },
{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i32, 6 },
{ ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i1, 7 },
{ ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i8, 2 },
{ ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i16, 2 },
{ ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i32, 6 },
{ ISD::FP_TO_SINT, MVT::v8i8, MVT::v8f32, 1 },
{ ISD::FP_TO_SINT, MVT::v4i8, MVT::v4f32, 1 },
{ ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i1, 6 },

75
test/Analysis/CostModel/X86/cast.ll
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@ -77,3 +77,78 @@ define i32 @masks4(<4 x i1> %in) {
ret i32 undef
}
define void @sitofp4(<4 x i1> %a, <4 x i8> %b, <4 x i16> %c, <4 x i32> %d) {
; CHECK: cost of 3 {{.*}} sitofp
%A1 = sitofp <4 x i1> %a to <4 x float>
; CHECK: cost of 3 {{.*}} sitofp
%A2 = sitofp <4 x i1> %a to <4 x double>
; CHECK: cost of 3 {{.*}} sitofp
%B1 = sitofp <4 x i8> %b to <4 x float>
; CHECK: cost of 3 {{.*}} sitofp
%B2 = sitofp <4 x i8> %b to <4 x double>
; CHECK: cost of 3 {{.*}} sitofp
%C1 = sitofp <4 x i16> %c to <4 x float>
; CHECK: cost of 3 {{.*}} sitofp
%C2 = sitofp <4 x i16> %c to <4 x double>
; CHECK: cost of 1 {{.*}} sitofp
%D1 = sitofp <4 x i32> %d to <4 x float>
; CHECK: cost of 1 {{.*}} sitofp
%D2 = sitofp <4 x i32> %d to <4 x double>
ret void
}
define void @sitofp8(<8 x i1> %a, <8 x i8> %b, <8 x i16> %c, <8 x i32> %d) {
; CHECK: cost of 8 {{.*}} sitofp
%A1 = sitofp <8 x i1> %a to <8 x float>
; CHECK: cost of 8 {{.*}} sitofp
%B1 = sitofp <8 x i8> %b to <8 x float>
; CHECK: cost of 5 {{.*}} sitofp
%C1 = sitofp <8 x i16> %c to <8 x float>
; CHECK: cost of 1 {{.*}} sitofp
%D1 = sitofp <8 x i32> %d to <8 x float>
ret void
}
define void @uitofp4(<4 x i1> %a, <4 x i8> %b, <4 x i16> %c, <4 x i32> %d) {
; CHECK: cost of 7 {{.*}} uitofp
%A1 = uitofp <4 x i1> %a to <4 x float>
; CHECK: cost of 7 {{.*}} uitofp
%A2 = uitofp <4 x i1> %a to <4 x double>
; CHECK: cost of 2 {{.*}} uitofp
%B1 = uitofp <4 x i8> %b to <4 x float>
; CHECK: cost of 2 {{.*}} uitofp
%B2 = uitofp <4 x i8> %b to <4 x double>
; CHECK: cost of 2 {{.*}} uitofp
%C1 = uitofp <4 x i16> %c to <4 x float>
; CHECK: cost of 2 {{.*}} uitofp
%C2 = uitofp <4 x i16> %c to <4 x double>
; CHECK: cost of 6 {{.*}} uitofp
%D1 = uitofp <4 x i32> %d to <4 x float>
; CHECK: cost of 6 {{.*}} uitofp
%D2 = uitofp <4 x i32> %d to <4 x double>
ret void
}
define void @uitofp8(<8 x i1> %a, <8 x i8> %b, <8 x i16> %c, <8 x i32> %d) {
; CHECK: cost of 6 {{.*}} uitofp
%A1 = uitofp <8 x i1> %a to <8 x float>
; CHECK: cost of 5 {{.*}} uitofp
%B1 = uitofp <8 x i8> %b to <8 x float>
; CHECK: cost of 5 {{.*}} uitofp
%C1 = uitofp <8 x i16> %c to <8 x float>
; CHECK: cost of 9 {{.*}} uitofp
%D1 = uitofp <8 x i32> %d to <8 x float>
ret void
}

9
test/Transforms/LoopVectorize/X86/conversion-cost.ll
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@ -33,11 +33,10 @@ define i32 @conversion_cost2(i32 %n, i8* nocapture %A, float* nocapture %B) noun
.lr.ph: ; preds = %0, %.lr.ph
%indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 9, %0 ]
%2 = add nsw i64 %indvars.iv, 3
%3 = trunc i64 %2 to i32
%4 = sitofp i32 %3 to float
%5 = getelementptr inbounds float* %B, i64 %indvars.iv
store float %4, float* %5, align 4
%add = add nsw i64 %indvars.iv, 3
%tofp = sitofp i64 %add to float
%gep = getelementptr inbounds float* %B, i64 %indvars.iv
store float %tofp, float* %gep, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n