From d70c98e884d19c4d94b5e83efd32888b8ee47869 Mon Sep 17 00:00:00 2001 From: Chad Rosier Date: Fri, 21 Sep 2012 00:41:42 +0000 Subject: [fast-isel] Fallback to SelectionDAG isel if we require strict alignment for non-halfword-aligned i16 loads/stores. rdar://12304911 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164345 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/CodeGen/ARM/fast-isel.ll | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'test/CodeGen/ARM/fast-isel.ll') diff --git a/test/CodeGen/ARM/fast-isel.ll b/test/CodeGen/ARM/fast-isel.ll index ecd5fe27a4..075fd2d0d2 100644 --- a/test/CodeGen/ARM/fast-isel.ll +++ b/test/CodeGen/ARM/fast-isel.ll @@ -1,5 +1,7 @@ ; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=dynamic-no-pic -mtriple=armv7-apple-ios | FileCheck %s --check-prefix=ARM ; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=dynamic-no-pic -mtriple=thumbv7-apple-ios | FileCheck %s --check-prefix=THUMB +; RUN: llc < %s -O0 -arm-strict-align -relocation-model=dynamic-no-pic -mtriple=armv7-apple-ios | FileCheck %s --check-prefix=ARM-STRICT-ALIGN +; RUN: llc < %s -O0 -arm-strict-align -relocation-model=dynamic-no-pic -mtriple=thumbv7-apple-ios | FileCheck %s --check-prefix=THUMB-STRICT-ALIGN ; Very basic fast-isel functionality. define i32 @add(i32 %a, i32 %b) nounwind { @@ -238,3 +240,31 @@ entry: } declare void @llvm.trap() nounwind + +define void @unaligned_i16_store(i16 %x, i16* %y) nounwind { +entry: +; ARM-STRICT-ALIGN: @unaligned_i16_store +; ARM-STRICT-ALIGN: strb +; ARM-STRICT-ALIGN-NEXT: strb + +; THUMB-STRICT-ALIGN: @unaligned_i16_store +; THUMB-STRICT-ALIGN: strb +; THUMB-STRICT-ALIGN: strb + + store i16 %x, i16* %y, align 1 + ret void +} + +define i16 @unaligned_i16_load(i16* %x) nounwind { +entry: +; ARM-STRICT-ALIGN: @unaligned_i16_store +; ARM-STRICT-ALIGN: ldrb +; ARM-STRICT-ALIGN: ldrb + +; THUMB-STRICT-ALIGN: @unaligned_i16_store +; THUMB-STRICT-ALIGN: ldrb +; THUMB-STRICT-ALIGN: ldrb + + %0 = load i16* %x, align 1 + ret i16 %0 +} \ No newline at end of file -- cgit v1.2.3