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llvm-project/llvm/test/CodeGen/AArch64/arm64-misaligned-memcpy-inl...

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[AArch64] Define subtarget feature strict-align. This commit defines subtarget feature strict-align and uses it instead of cl::opt -aarch64-strict-align to decide whether strict alignment should be forced. rdar://problem/21529937 llvm-svn: 243516
2015-07-29 22:17:26 +08:00
; RUN: llc -mtriple=arm64-apple-ios -mattr=+strict-align < %s | FileCheck %s
[AArch64] Teach AArch64TargetLowering::getOptimalMemOpType to consider alignment restrictions when choosing a type for small-memcpy inlining in SelectionDAGBuilder. This ensures that the loads and stores output for the memcpy won't be further expanded during legalization, which would cause the total number of instructions for the memcpy to exceed (often significantly) the inlining thresholds. <rdar://problem/17829180> llvm-svn: 234462
2015-04-09 11:40:33 +08:00
; Small (16-bytes here) unaligned memcpys should stay memcpy calls if
; strict-alignment is turned on.
define void @t0(i8* %out, i8* %in) {
; CHECK-LABEL: t0:
; CHECK: orr w2, wzr, #0x10
; CHECK-NEXT: bl _memcpy
entry:
Revert "Change memcpy/memset/memmove to have dest and source alignments." This reverts commit r253511. This likely broke the bots in http://lab.llvm.org:8011/builders/clang-ppc64-elf-linux2/builds/20202 http://bb.pgr.jp/builders/clang-3stage-i686-linux/builds/3787 llvm-svn: 253543
2015-11-19 13:56:52 +08:00
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %out, i8* %in, i64 16, i32 1, i1 false)
[AArch64] Teach AArch64TargetLowering::getOptimalMemOpType to consider alignment restrictions when choosing a type for small-memcpy inlining in SelectionDAGBuilder. This ensures that the loads and stores output for the memcpy won't be further expanded during legalization, which would cause the total number of instructions for the memcpy to exceed (often significantly) the inlining thresholds. <rdar://problem/17829180> llvm-svn: 234462
2015-04-09 11:40:33 +08:00
ret void
}
Revert "Change memcpy/memset/memmove to have dest and source alignments." This reverts commit r253511. This likely broke the bots in http://lab.llvm.org:8011/builders/clang-ppc64-elf-linux2/builds/20202 http://bb.pgr.jp/builders/clang-3stage-i686-linux/builds/3787 llvm-svn: 253543
2015-11-19 13:56:52 +08:00
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1)