RPCSX/llvm
1
0
Fork 0
mirror of https://github.com/RPCSX/llvm.git synced 2025-02-23 14:30:50 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

[AArch64] Add a regression test for the load store optimizer.

Browse Source 
We have a couple of regression tests for load/store pairing, but (to my knowledge) there are no regression tests for the load/store + add/sub folding.

As a first step towards increased test coverage of this area, this commit adds a test for one instance of a load + add to pre-indexed load transformation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209618 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tilmann Scheller 2014-05-26 09:37:19 +00:00
parent 866ed7f63f
commit 47e3b43768
1 changed files with 31 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
test/CodeGen/AArch64/ldst-opt.ll Normal file
View File

@ -0,0 +1,31 @@
; RUN: llc -mtriple=aarch64-linux-gnu -verify-machineinstrs -o - %s | FileCheck %s
; This file contains tests for the AArch64 load/store optimizer.
%struct.A = type { %struct.B, %struct.C }
%struct.B = type { i8*, i8*, i8*, i8* }
%struct.C = type { i32, i32 }
; Check the following transform:
;
; ldr w1, [x0, #32]
; ...
; add x0, x0, #32
; ->
; ldr w1, [x0, #32]!
define void @foo(%struct.A* %ptr) nounwind {
; CHECK-LABEL: foo
; CHECK: ldr w{{[0-9]+}}, [x{{[0-9]+}}, #32]!
entry:
%a = getelementptr inbounds %struct.A* %ptr, i64 0, i32 1, i32 0
%add = load i32* %a, align 4
br label %bar
bar:
%c = getelementptr inbounds %struct.A* %ptr, i64 0, i32 1
tail call void @bar(%struct.C* %c, i32 %add)
ret void
}
declare void @bar(%struct.C*, i32)