ampere-computing/llvm.git - LLVM including Ampere Computing toolchain specific patches

Age	Commit message (Collapse)	Author
2018-11-30	Merging r339260:	Tom Stellard
	------------------------------------------------------------------------ r339260 \| syzaara \| 2018-08-08 08:20:43 -0700 (Wed, 08 Aug 2018) \| 13 lines [PowerPC] Improve codegen for vector loads using scalar_to_vector This patch aims to improve the codegen for vector loads involving the scalar_to_vector (load X) sequence. Initially, ld->mv instructions were used for scalar_to_vector (load X), so this patch allows scalar_to_vector (load X) to utilize: LXSD and LXSDX for i64 and f64 LXSIWAX for i32 (sign extension to i64) LXSIWZX for i32 and f64 Committing on behalf of Amy Kwan. Differential Revision: https://reviews.llvm.org/D48950 ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_70@347957 91177308-0d34-0410-b5e6-96231b3b80d8
2017-11-20	[PPC] Heuristic to choose between a X-Form VSX ld/st vs a X-Form FP ld/st.	Tony Jiang
	The VSX versions have the advantage of a full 64-register target whereas the FP ones have the advantage of lower latency and higher throughput. So what we’re after is using the faster instructions in low register pressure situations and using the larger register file in high register pressure situations. The heuristic chooses between the following 7 pairs of instructions. PPC::LXSSPX vs PPC::LFSX PPC::LXSDX vs PPC::LFDX PPC::STXSSPX vs PPC::STFSX PPC::STXSDX vs PPC::STFDX PPC::LXSIWAX vs PPC::LFIWAX PPC::LXSIWZX vs PPC::LFIWZX PPC::STXSIWX vs PPC::STFIWX Differential Revision: https://reviews.llvm.org/D38486 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@318651 91177308-0d34-0410-b5e6-96231b3b80d8