[llvm] [RISCV] Implement RISCV TTI::getNumberOfParts() (PR #223096)

[Ryan Buchner via llvm-commits]

================
@@ -119,19 +119,33 @@ define i32 @test(ptr %pix1, ptr %pix2, i64 %idx.ext, i64 %idx.ext63, ptr %add.pt
 ; CHECK-NEXT:    [[TMP118:%.*]] = shufflevector <4 x i32> [[TMP91]], <4 x i32> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison>
 ; CHECK-NEXT:    [[TMP94:%.*]] = shufflevector <8 x i32> [[TMP93]], <8 x i32> [[TMP118]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 8, i32 9, i32 10, i32 11>
 ; CHECK-NEXT:    [[TMP95:%.*]] = add <8 x i32> [[TMP94]], [[TMP90]]
-; CHECK-NEXT:    [[TMP96:%.*]] = sub <8 x i32> [[TMP90]], [[TMP94]]
-; CHECK-NEXT:    [[TMP97:%.*]] = shufflevector <8 x i32> [[TMP95]], <8 x i32> [[TMP96]], <16 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7, i32 12, i32 8, i32 13, i32 9, i32 14, i32 10, i32 15, i32 11>
-; CHECK-NEXT:    [[TMP98:%.*]] = shufflevector <4 x i32> [[TMP57]], <4 x i32> [[TMP64]], <16 x i32> <i32 2, i32 4, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
-; CHECK-NEXT:    [[TMP99:%.*]] = shufflevector <4 x i32> [[TMP43]], <4 x i32> poison, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
-; CHECK-NEXT:    [[TMP100:%.*]] = shufflevector <16 x i32> [[TMP98]], <16 x i32> [[TMP99]], <16 x i32> <i32 0, i32 1, i32 16, i32 17, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; CHECK-NEXT:    [[TMP127:%.*]] = shufflevector <4 x i32> [[TMP87]], <4 x i32> poison, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison>
+; CHECK-NEXT:    [[TMP102:%.*]] = shufflevector <8 x i32> [[TMP127]], <8 x i32> [[TMP90]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 8, i32 9, i32 10, i32 11>
+; CHECK-NEXT:    [[TMP128:%.*]] = shufflevector <4 x i32> [[TMP91]], <4 x i32> [[TMP92]], <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
+; CHECK-NEXT:    [[TMP104:%.*]] = sub <8 x i32> [[TMP102]], [[TMP128]]
+; CHECK-NEXT:    [[TMP97:%.*]] = shufflevector <8 x i32> [[TMP95]], <8 x i32> [[TMP104]], <16 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7, i32 8, i32 12, i32 9, i32 13, i32 10, i32 14, i32 11, i32 15>
+; CHECK-NEXT:    [[TMP129:%.*]] = shufflevector <4 x i32> [[TMP62]], <4 x i32> [[TMP43]], <16 x i32> <i32 poison, i32 poison, i32 poison, i32 poison, i32 0, i32 1, i32 4, i32 5, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; CHECK-NEXT:    [[TMP130:%.*]] = shufflevector <4 x i32> [[TMP57]], <4 x i32> poison, <16 x i32> <i32 poison, i32 poison, i32 2, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; CHECK-NEXT:    [[TMP131:%.*]] = shufflevector <4 x i32> [[TMP57]], <4 x i32> poison, <16 x i32> <i32 0, i32 1, i32 2, i32 3, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; CHECK-NEXT:    [[TMP132:%.*]] = shufflevector <16 x i32> [[TMP129]], <16 x i32> [[TMP131]], <16 x i32> <i32 18, i32 poison, i32 poison, i32 poison, i32 4, i32 5, i32 6, i32 7, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
+; CHECK-NEXT:    [[TMP133:%.*]] = shufflevector <4 x i32> [[TMP23]], <4 x i32> poison, <16 x i32> <i32 0, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison, i32 poison>
----------------
bababuck wrote:

The codegen comes out roughly the same from the eye test, but will gather data from K1.

https://github.com/llvm/llvm-project/pull/223096