[SLP] Additional tests for extractelement cost fix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295050 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/SLPVectorizer/X86/extractelement.ll b/test/Transforms/SLPVectorizer/X86/extractelement.ll
index 264444447b6ddd7edb18483d9e191fd0eaccfa51..4abdf615967d570a838430ef4940a6f565232a49 100644 (file)
--- a/test/Transforms/SLPVectorizer/X86/extractelement.ll
+++ b/test/Transforms/SLPVectorizer/X86/extractelement.ll
@@ -1,5 +1,9 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt < %s -slp-vectorizer -S -mtriple=x86_64-unknown-linux -march=core-avx2 | FileCheck %s
+; RUN: opt < %s -slp-vectorizer -S -mtriple=x86_64-unknown-linux -march=core-avx2 -slp-threshold=-1 -slp-vectorize-hor-store | FileCheck %s --check-prefix=THRESH1
+; RUN: opt < %s -slp-vectorizer -S -mtriple=x86_64-unknown-linux -march=core-avx2 -slp-threshold=-2 -slp-vectorize-hor-store | FileCheck %s --check-prefix=THRESH2
+
+@a = global float 0.000000e+00, align 4
 
 define float @f(<2 x float> %x) {
 ; CHECK-LABEL: @f(
@@ -18,3 +22,38 @@ define float @f(<2 x float> %x) {
   ret float %add
 }
 
+define float @f_used_out_of_tree(<2 x float> %x) {
+; THRESH2-LABEL: @f_used_out_of_tree(
+; THRESH2-NEXT:    [[X0:%.*]] = extractelement <2 x float> [[X:%.*]], i32 0
+; THRESH2-NEXT:    [[X1:%.*]] = extractelement <2 x float> [[X]], i32 1
+; THRESH2-NEXT:    [[X0X0:%.*]] = fmul float [[X0]], [[X0]]
+; THRESH2-NEXT:    [[X1X1:%.*]] = fmul float [[X1]], [[X1]]
+; THRESH2-NEXT:    [[ADD:%.*]] = fadd float [[X0X0]], [[X1X1]]
+; THRESH2-NEXT:    store float [[ADD]], float* @a
+; THRESH2-NEXT:    ret float [[X0]]
+;
+  %x0 = extractelement <2 x float> %x, i32 0
+  %x1 = extractelement <2 x float> %x, i32 1
+  %x0x0 = fmul float %x0, %x0
+  %x1x1 = fmul float %x1, %x1
+  %add = fadd float %x0x0, %x1x1
+  store float %add, float* @a
+  ret float %x0
+}
+
+define float @f_used_twice_in_tree(<2 x float> %x) {
+; THRESH1-LABEL: @f_used_twice_in_tree(
+; THRESH1-NEXT:    [[X0:%.*]] = extractelement <2 x float> [[X:%.*]], i32 0
+; THRESH1-NEXT:    [[X1:%.*]] = extractelement <2 x float> [[X]], i32 1
+; THRESH1-NEXT:    [[X0X0:%.*]] = fmul float [[X0]], [[X1]]
+; THRESH1-NEXT:    [[X1X1:%.*]] = fmul float [[X1]], [[X1]]
+; THRESH1-NEXT:    [[ADD:%.*]] = fadd float [[X0X0]], [[X1X1]]
+; THRESH1-NEXT:    ret float [[ADD]]
+  %x0 = extractelement <2 x float> %x, i32 0
+  %x1 = extractelement <2 x float> %x, i32 1
+  %x0x0 = fmul float %x0, %x1
+  %x1x1 = fmul float %x1, %x1
+  %add = fadd float %x0x0, %x1x1
+  ret float %add
+}
+