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| author | Tilmann Scheller <t.scheller@samsung.com> | 2014-05-26 09:37:19 +0000 |
|---|---|---|
| committer | Tilmann Scheller <t.scheller@samsung.com> | 2014-05-26 09:37:19 +0000 |
| commit | 47e3b437684acf6a025ba45e5b5da28712befe73 (patch) | |
| tree | 1a1bae91e039c381317ecbe1c00cc9ff238d21d1 /test/CodeGen/AArch64 | |
| parent | 866ed7f63f9edf9c20763a9abc115fb23372f42f (diff) | |
| download | llvm-47e3b437684acf6a025ba45e5b5da28712befe73.tar.gz llvm-47e3b437684acf6a025ba45e5b5da28712befe73.tar.bz2 llvm-47e3b437684acf6a025ba45e5b5da28712befe73.tar.xz | |
[AArch64] Add a regression test for the load store optimizer.
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
Diffstat (limited to 'test/CodeGen/AArch64')
| -rw-r--r-- | test/CodeGen/AArch64/ldst-opt.ll | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/ldst-opt.ll b/test/CodeGen/AArch64/ldst-opt.ll new file mode 100644 index 0000000000..79c18cacb8 --- /dev/null +++ b/test/CodeGen/AArch64/ldst-opt.ll @@ -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) + |