[X86] Add truncate cost model tests to min-legal-vector-width.ll for when we're avoid...

diff --git a/llvm/test/Analysis/CostModel/X86/min-legal-vector-width.ll b/llvm/test/Analysis/CostModel/X86/min-legal-vector-width.ll
index c7b2a77..8a4e774 100644 (file)
--- a/llvm/test/Analysis/CostModel/X86/min-legal-vector-width.ll
+++ b/llvm/test/Analysis/CostModel/X86/min-legal-vector-width.ll
@@ -125,3 +125,31 @@ define void @sext512() "min-legal-vector-width"="512" {
   %F = sext <32 x i8> undef to <32 x i16>
   ret void
 }
+
+define void @trunc256() "min-legal-vector-width"="256" {
+; VEC256-LABEL: 'trunc256'
+; VEC256-NEXT:  Cost Model: Found an estimated cost of 4 for instruction: %A = trunc <8 x i64> undef to <8 x i32>
+; VEC256-NEXT:  Cost Model: Found an estimated cost of 9 for instruction: %B = trunc <8 x i64> undef to <8 x i16>
+; VEC256-NEXT:  Cost Model: Found an estimated cost of 11 for instruction: %C = trunc <8 x i64> undef to <8 x i8>
+; VEC256-NEXT:  Cost Model: Found an estimated cost of 6 for instruction: %D = trunc <16 x i32> undef to <16 x i16>
+; VEC256-NEXT:  Cost Model: Found an estimated cost of 7 for instruction: %E = trunc <16 x i32> undef to <16 x i8>
+; VEC256-NEXT:  Cost Model: Found an estimated cost of 9 for instruction: %F = trunc <32 x i16> undef to <32 x i8>
+; VEC256-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
+;
+; VEC512-LABEL: 'trunc256'
+; VEC512-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %A = trunc <8 x i64> undef to <8 x i32>
+; VEC512-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %B = trunc <8 x i64> undef to <8 x i16>
+; VEC512-NEXT:  Cost Model: Found an estimated cost of 11 for instruction: %C = trunc <8 x i64> undef to <8 x i8>
+; VEC512-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %D = trunc <16 x i32> undef to <16 x i16>
+; VEC512-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %E = trunc <16 x i32> undef to <16 x i8>
+; VEC512-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %F = trunc <32 x i16> undef to <32 x i8>
+; VEC512-NEXT:  Cost Model: Found an estimated cost of 0 for instruction: ret void
+;
+  %A = trunc <8 x i64> undef to <8 x i32>
+  %B = trunc <8 x i64> undef to <8 x i16>
+  %C = trunc <8 x i64> undef to <8 x i8>
+  %D = trunc <16 x i32> undef to <16 x i16>
+  %E = trunc <16 x i32> undef to <16 x i8>
+  %F = trunc <32 x i16> undef to <32 x i8>
+  ret void
+}