5 Commits

Author	SHA1	Message	Date
Dale Johannesen	4d887f7ca7	Propagate the AlignStack bit in InlineAsm's to the ... PrologEpilog code, and use it to determine whether the asm forces stack alignment or not. gcc consistently does not do this for GCC-style asms; Apple gcc inconsistently sometimes does it for asm blocks. There is no convenient place to put a bit in either the SDNode or the MachineInstr form, so I've added an extra operand to each; unlovely, but it does allow for expansion for more bits, should we need it. PR 5125. Some existing testcases are affected. The operand lists of the SDNode and MachineInstr forms are indexed with awesome mnemonics, like "2"; I may fix this someday, but not now. I'm not making it any worse. If anyone is inspired I think you can find all the right places from this patch. llvm-svn: 107506	2010-07-02 20:16:09 +00:00
Jakob Stoklund Olesen	b613ae2c89	Add a -regalloc=default option that chooses a register allocator based on the -O ... optimization level. This only really affects llc for now because both the llvm-gcc and clang front ends override the default register allocator. I intend to remove that code later. llvm-svn: 104904	2010-05-27 23:57:25 +00:00
Dan Gohman	40503396da	Eliminate more uses of llvm-as and llvm-dis. ... llvm-svn: 81290	2009-09-08 23:54:48 +00:00
Dale Johannesen	c4148c4ec7	Assume an inline asm might be a call, so we get ... stack alignment right when it is. This is not ideal but conservatively correct. Adjust a test to compensate for changed stack offset value. gcc.apple/asm-block-57.c llvm-svn: 76120	2009-07-16 22:34:45 +00:00
Evan Cheng	38f2453817	Fix support for inline asm input / output operand tying when operand spans across multiple registers (e.g. two i64 operands in 32-bit mode). ... llvm-svn: 74053	2009-06-24 02:05:51 +00:00