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6 Commits

Author SHA1 Message Date
Quentin Colombet
a1a323c637 [TwoAddressInstructionPass] Try 3 Addr Conversion After Commuting. 
TwoAddressInstructionPass stops after a successful commuting but 3 Addr
conversion might be good for some cases.
 
Consider:

int foo(int a, int b) {
  return a + b;
}

Before this commit, we emit:

addl	%esi, %edi
movl	%edi, %eax
ret

After this commit, we try 3 Addr conversion:

leal	(%rsi,%rdi), %eax
ret

Patch by Volkan Keles <vkeles@apple.com>!

Differential Revision: http://reviews.llvm.org/D10851


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241206 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-01 23:12:13 +00:00
Charles Davis
ac226bbf45 Target/X86: Add explicit Win64 and System V/x86-64 calling conventions. 
Summary:
This patch adds explicit calling convention types for the Win64 and
System V/x86-64 ABIs. This allows code to override the default, and use
the Win64 convention on a target that wants to use SysV (and
vice-versa). This is needed to implement the `ms_abi` and `sysv_abi` GNU
attributes.

Reviewers:

CC:

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186144 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-07-12 06:02:35 +00:00
NAKAMURA Takumi
3f4be4fb86 Target/X86: Tweak allocating shadow area (aka home) on Win64. It must be enough for caller to allocate one. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124949 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-05 15:11:32 +00:00
Cameron Esfahani
ec37b00b17 Recommit 116056, now with the missing file... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116083 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-08 19:24:18 +00:00
Andrew Trick
5900201aa7 reverting 116056: win64_params.ll may need to be conditionalized? 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116063 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-08 17:22:42 +00:00
Cameron Esfahani
d7b8d91d4a Small patch to restore home register stack space allocation for the Win64 case. Add test case. This code eventually needs to be tighter, since it's always allocating it, even in leaf routines. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116056 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-08 10:31:30 +00:00