[CostModel][X86] Track fpext conversion cost for 16 elements

[HaohaiWen]

No description provided.

[llvmbot]

@llvm/pr-subscribers-llvm-analysis

@llvm/pr-subscribers-backend-x86

Author: None (HaohaiWen)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/76277.diff

1 Files Affected:

• (modified) llvm/test/Analysis/CostModel/X86/cast.ll (+12-8)

diff --git a/llvm/test/Analysis/CostModel/X86/cast.ll b/llvm/test/Analysis/CostModel/X86/cast.ll
index 5a83d4e81fd38e..e0173e9df4dc3b 100644
--- a/llvm/test/Analysis/CostModel/X86/cast.ll
+++ b/llvm/test/Analysis/CostModel/X86/cast.ll
@@ -616,27 +616,31 @@ define void @fp_conv(<8 x float> %a, <16 x float>%b, <4 x float> %c) {
 ; SSE-LABEL: 'fp_conv'
 ; SSE-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %A1 = fpext <4 x float> %c to <4 x double>
 ; SSE-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %A2 = fpext <8 x float> %a to <8 x double>
-; SSE-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %A3 = fptrunc <4 x double> undef to <4 x float>
-; SSE-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %A4 = fptrunc <8 x double> undef to <8 x float>
+; SSE-NEXT:  Cost Model: Found an estimated cost of 12 for instruction: %A3 = fpext <16 x float> %b to <16 x double>
+; SSE-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %A4 = fptrunc <4 x double> undef to <4 x float>
+; SSE-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %A5 = fptrunc <8 x double> undef to <8 x float>
 ; SSE-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; AVX-LABEL: 'fp_conv'
 ; AVX-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %A1 = fpext <4 x float> %c to <4 x double>
 ; AVX-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %A2 = fpext <8 x float> %a to <8 x double>
-; AVX-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %A3 = fptrunc <4 x double> undef to <4 x float>
-; AVX-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %A4 = fptrunc <8 x double> undef to <8 x float>
+; AVX-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %A3 = fpext <16 x float> %b to <16 x double>
+; AVX-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %A4 = fptrunc <4 x double> undef to <4 x float>
+; AVX-NEXT:  Cost Model: Found an estimated cost of 3 for instruction: %A5 = fptrunc <8 x double> undef to <8 x float>
 ; AVX-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
 ; AVX512-LABEL: 'fp_conv'
 ; AVX512-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %A1 = fpext <4 x float> %c to <4 x double>
 ; AVX512-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %A2 = fpext <8 x float> %a to <8 x double>
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %A3 = fptrunc <4 x double> undef to <4 x float>
-; AVX512-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %A4 = fptrunc <8 x double> undef to <8 x float>
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %A3 = fpext <16 x float> %b to <16 x double>
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %A4 = fptrunc <4 x double> undef to <4 x float>
+; AVX512-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %A5 = fptrunc <8 x double> undef to <8 x float>
 ; AVX512-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
 ;
   %A1 = fpext <4 x float> %c to <4 x double>
   %A2 = fpext <8 x float> %a to <8 x double>
-  %A3 = fptrunc <4 x double> undef to <4 x float>
-  %A4 = fptrunc <8 x double> undef to <8 x float>
+  %A3 = fpext <16 x float> %b to <16 x double>
+  %A4 = fptrunc <4 x double> undef to <4 x float>
+  %A5 = fptrunc <8 x double> undef to <8 x float>
   ret void
 }

[phoebewang]

LGTM.

[RKSimon]

LGTM