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6 Commits

Author SHA1 Message Date
Chris Lattner a5f58b05e8 clang side to match the LLVM IR type system rewrite patch. 
llvm-svn: 134831
 2011-07-09 17:41:47 +00:00
Eli Friedman 3346582bca Change -mno-mmx to be more compatible with gcc. Specifically, -mno-mmx should not imply -mno-sse. 
Note that because we don't usually touch the MMX registers anyway, all -mno-mmx needs to do is tweak the x86-32 calling convention a little for vectors that look like MMX vectors, and prevent the definition of __MMX__.

clang doesn't actually stop the user from using MMX inline asm operands or MMX builtins in -mno-mmx mode; as a QOI issue, it would be nice to diagnose, but I doubt it really matters much.

<rdar://problem/9694837>

llvm-svn: 134770
 2011-07-08 23:31:17 +00:00
Chris Lattner e76b95ae15 make the x86-32 backend specify a byval alignment, even when the 
code generator will do it.  With this patch, clang compiles the example
in PR9794 to not have an alloca temporary.

llvm-svn: 131881
 2011-05-22 23:35:00 +00:00
Bill Wendling 5cd41c4b13 Reapply r116684 with fixes. The test cases needed to be updated. 
llvm-svn: 116696
 2010-10-18 03:41:31 +00:00
Daniel Dunbar dd38fbc7fb IRgen/ABI/x86-32: Realign indirect arguments when the ABI requires us to pass 
them with a smaller alignment than the rest of codegen expects.

llvm-svn: 114115
 2010-09-16 20:42:06 +00:00
Daniel Dunbar ed23de3348 IRgen/ABI/x86_32/Darwin: On Darwin, only structures with SSE vector types get passed 
with a non-default-stack-ABI-alignment (of 16).
 - This fixes the ABI convenient, but breaks codegen since we now have
   underaligned arguments. Marginal improvement overall though, and will be
   fixed in next commit.

llvm-svn: 114113
 2010-09-16 20:42:00 +00:00