[PATCH] D120438: [SLP][NFC] Test for a follow-up fix of the the vector min/max instrinsic cost calculation.
Vasileios Porpodas via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Feb 23 17:14:03 PST 2022
vporpo updated this revision to Diff 410978.
vporpo added a comment.
Fixed function name in checks.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D120438/new/
https://reviews.llvm.org/D120438
Files:
llvm/test/Transforms/SLPVectorizer/X86/max_intrinsic_cost.ll
Index: llvm/test/Transforms/SLPVectorizer/X86/max_intrinsic_cost.ll
===================================================================
--- /dev/null
+++ llvm/test/Transforms/SLPVectorizer/X86/max_intrinsic_cost.ll
@@ -0,0 +1,24 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -slp-vectorizer -mcpu=corei7-avx -mtriple=x86_64-unknown-linux -S | FileCheck %s
+
+; This test checks whether the cost of the vector max intrinsic is calculated
+; correctly. A max vector intrinsic combines the select and icmp instructions.
+; This maps to a single PMAX instruction in x86.
+define void @max_intrinsic_cost(i64 %arg0, i64 %arg1) {
+; CHECK-LABEL: @max_intrinsic_cost(
+; CHECK-NEXT: [[TMP1:%.*]] = insertelement <2 x i64> poison, i64 [[ARG0:%.*]], i32 0
+; CHECK-NEXT: [[TMP2:%.*]] = insertelement <2 x i64> [[TMP1]], i64 [[ARG1:%.*]], i32 1
+; CHECK-NEXT: [[TMP3:%.*]] = icmp sgt <2 x i64> [[TMP2]], <i64 123, i64 456>
+; CHECK-NEXT: [[TMP4:%.*]] = select <2 x i1> [[TMP3]], <2 x i64> [[TMP2]], <2 x i64> <i64 123, i64 456>
+; CHECK-NEXT: [[TMP5:%.*]] = extractelement <2 x i64> [[TMP4]], i32 0
+; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x i64> [[TMP4]], i32 1
+; CHECK-NEXT: [[ROOT:%.*]] = icmp sle i64 [[TMP5]], [[TMP6]]
+; CHECK-NEXT: ret void
+;
+ %icmp0 = icmp sgt i64 %arg0, 123
+ %icmp1 = icmp sgt i64 %arg1, 456
+ %select0 = select i1 %icmp0, i64 %arg0, i64 123
+ %select1 = select i1 %icmp1, i64 %arg1, i64 456
+ %root = icmp sle i64 %select0, %select1
+ ret void
+}
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