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-rw-r--r--llvm/lib/Target/X86/X86TargetTransformInfo.cpp12
-rw-r--r--llvm/test/Analysis/CostModel/X86/arith-fp.ll4
2 files changed, 14 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
index 89f45dd5461..bce3a061b8e 100644
--- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
+++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
@@ -832,6 +832,12 @@ int X86TTIImpl::getArithmeticInstrCost(
{ ISD::FDIV, MVT::v4f32, 39 }, // Pentium IV from http://www.agner.org/
{ ISD::FDIV, MVT::f64, 38 }, // Pentium IV from http://www.agner.org/
{ ISD::FDIV, MVT::v2f64, 69 }, // Pentium IV from http://www.agner.org/
+
+ { ISD::FADD, MVT::f32, 2 }, // Pentium IV from http://www.agner.org/
+ { ISD::FADD, MVT::f64, 2 }, // Pentium IV from http://www.agner.org/
+
+ { ISD::FSUB, MVT::f32, 2 }, // Pentium IV from http://www.agner.org/
+ { ISD::FSUB, MVT::f64, 2 }, // Pentium IV from http://www.agner.org/
};
if (ST->hasSSE2())
@@ -841,6 +847,12 @@ int X86TTIImpl::getArithmeticInstrCost(
static const CostTblEntry SSE1CostTable[] = {
{ ISD::FDIV, MVT::f32, 17 }, // Pentium III from http://www.agner.org/
{ ISD::FDIV, MVT::v4f32, 34 }, // Pentium III from http://www.agner.org/
+
+ { ISD::FADD, MVT::f32, 1 }, // Pentium III from http://www.agner.org/
+ { ISD::FADD, MVT::v4f32, 2 }, // Pentium III from http://www.agner.org/
+
+ { ISD::FSUB, MVT::f32, 1 }, // Pentium III from http://www.agner.org/
+ { ISD::FSUB, MVT::v4f32, 2 }, // Pentium III from http://www.agner.org/
};
if (ST->hasSSE1())
diff --git a/llvm/test/Analysis/CostModel/X86/arith-fp.ll b/llvm/test/Analysis/CostModel/X86/arith-fp.ll
index bd62bd9dc18..bce7ca8d59f 100644
--- a/llvm/test/Analysis/CostModel/X86/arith-fp.ll
+++ b/llvm/test/Analysis/CostModel/X86/arith-fp.ll
@@ -16,7 +16,7 @@ target triple = "x86_64-apple-macosx10.8.0"
define i32 @fadd(i32 %arg) {
; SSE1-LABEL: 'fadd'
-; SSE1-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %F32 = fadd float undef, undef
+; SSE1-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %F32 = fadd float undef, undef
; SSE1-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V4F32 = fadd <4 x float> undef, undef
; SSE1-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V8F32 = fadd <8 x float> undef, undef
; SSE1-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V16F32 = fadd <16 x float> undef, undef
@@ -129,7 +129,7 @@ define i32 @fadd(i32 %arg) {
define i32 @fsub(i32 %arg) {
; SSE1-LABEL: 'fsub'
-; SSE1-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %F32 = fsub float undef, undef
+; SSE1-NEXT: Cost Model: Found an estimated cost of 1 for instruction: %F32 = fsub float undef, undef
; SSE1-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %V4F32 = fsub <4 x float> undef, undef
; SSE1-NEXT: Cost Model: Found an estimated cost of 4 for instruction: %V8F32 = fsub <8 x float> undef, undef
; SSE1-NEXT: Cost Model: Found an estimated cost of 8 for instruction: %V16F32 = fsub <16 x float> undef, undef
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