[llvm] [SLP] Allow non-power-of-2 VF in tryToVectorizeList (PR #206259)

[Harrison Hao via llvm-commits]

================
@@ -8,30 +8,49 @@
 ;  A[2] = (T * B[12] + 6.0);
 ;}
 
-define i32 @foo(ptr noalias nocapture %A, ptr noalias nocapture %B, float %T) {
-; CHECK-LABEL: @foo(
-; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr inbounds float, ptr [[B:%.*]], i64 10
-; CHECK-NEXT:    [[TMP2:%.*]] = load float, ptr [[TMP1]], align 4
-; CHECK-NEXT:    [[TMP3:%.*]] = fmul float [[TMP2]], [[T:%.*]]
-; CHECK-NEXT:    [[TMP4:%.*]] = fpext float [[TMP3]] to double
-; CHECK-NEXT:    [[TMP5:%.*]] = fadd double [[TMP4]], 4.000000e+00
-; CHECK-NEXT:    [[TMP6:%.*]] = fptosi double [[TMP5]] to i8
-; CHECK-NEXT:    store i8 [[TMP6]], ptr [[A:%.*]], align 1
-; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr inbounds float, ptr [[B]], i64 11
-; CHECK-NEXT:    [[TMP13:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 1
-; CHECK-NEXT:    [[TMP9:%.*]] = load <2 x float>, ptr [[TMP7]], align 4
-; CHECK-NEXT:    [[TMP10:%.*]] = insertelement <2 x float> poison, float [[T]], i32 0
-; CHECK-NEXT:    [[TMP11:%.*]] = shufflevector <2 x float> [[TMP10]], <2 x float> poison, <2 x i32> zeroinitializer
-; CHECK-NEXT:    [[TMP16:%.*]] = fmul <2 x float> [[TMP9]], [[TMP11]]
-; CHECK-NEXT:    [[TMP17:%.*]] = fpext <2 x float> [[TMP16]] to <2 x double>
-; CHECK-NEXT:    [[TMP14:%.*]] = fadd <2 x double> [[TMP17]], <double 5.000000e+00, double 6.000000e+00>
-; CHECK-NEXT:    [[TMP15:%.*]] = fptosi <2 x double> [[TMP14]] to <2 x i8>
-; CHECK-NEXT:    [[TMP12:%.*]] = extractelement <2 x i8> [[TMP15]], i32 0
-; CHECK-NEXT:    store i8 [[TMP12]], ptr [[TMP13]], align 1
-; CHECK-NEXT:    [[TMP20:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 2
-; CHECK-NEXT:    [[TMP19:%.*]] = extractelement <2 x i8> [[TMP15]], i32 1
-; CHECK-NEXT:    store i8 [[TMP19]], ptr [[TMP20]], align 1
-; CHECK-NEXT:    ret i32 undef
+define void @foo(ptr noalias nocapture %A, ptr noalias nocapture %B, float %T) {
----------------
harrisonGPU wrote:

This function type changed to void for clang format issue.

https://github.com/llvm/llvm-project/pull/206259