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4 Commits

Author SHA1 Message Date
Pete Cooper
9989a63818 Stop custom lowering forr x86 DEC64m from happening if the load in the lowered sequence has more than 1 user 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150537 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-15 00:33:37 +00:00
Pete Cooper
ce3900849a Fixed bug when custom lowering DEC64m on x86. 
If the DEC node had more than one user, it was doing this lowering but
leaving the original DEC node around and so decrementing twice.

Fixes PR11964.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150356 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-13 00:10:03 +00:00
NAKAMURA Takumi
ec0af2f4e1 test/CodeGen/X86/dec-eflags-lower.ll: Relax expression for win32 x64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144714 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-15 22:30:37 +00:00
Pete Cooper
2d49689793 Added custom lowering for load->dec->store sequence in x86 when the EFLAGS registers is used 
by later instructions.

Only done for DEC64m right now.

Fixes <rdar://problem/6172640>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144705 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-15 21:57:53 +00:00