RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-25 04:02:41 +01:00
Code Issues Projects Releases Wiki Activity

Add another interesting shufflevector test case for InstSimplify. NFC.

Browse Source 
Test case shows opportunity to constant fold a shuffle with one variable
input vector operand.

llvm-svn: 299327
This commit is contained in:
Zvi Rackover 2017-04-02 10:42:21 +00:00
parent da5f881e59
commit 9774a1af3b
1 changed files with 9 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
test/Transforms/InstSimplify/shufflevector.ll
View File

@ -1,6 +1,15 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instsimplify -S | FileCheck %s
define <4 x i32> @const_folding(<4 x i32> %x) {
; CHECK-LABEL: @const_folding(
; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> zeroinitializer, <4 x i32> <i32 5, i32 4, i32 5, i32 4>
; CHECK-NEXT: ret <4 x i32> [[SHUF]]
;
%shuf = shufflevector <4 x i32> %x, <4 x i32> zeroinitializer, <4 x i32> <i32 5, i32 4, i32 5, i32 4>
ret <4 x i32> %shuf
}
define <4 x i32> @splat_operand(<4 x i32> %x) {
; CHECK-LABEL: @splat_operand(
; CHECK-NEXT: [[SPLAT:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> undef, <4 x i32> zeroinitializer