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4 Commits

Author SHA1 Message Date
Oliver Stannard d55e115b58 ARM: Correctly align arguments after a byval struct is passed on the stack 
llvm-svn: 202985
 2014-03-05 15:25:27 +00:00
Matthias Braun 77219d8424 Revert "Tests: Be less dependent on a specific schedule/regalloc" 
This reverts r192454

Apparently FileCheck isn't as smart as I though and does not enforce a
topological order between variable defs+uses.

llvm-svn: 192472
 2013-10-11 18:09:19 +00:00
Matthias Braun 94b88b8851 Tests: Be less dependent on a specific schedule/regalloc 
llvm-svn: 192454
 2013-10-11 15:40:12 +00:00
Stepan Dyatkovskiy 8c02c98259 For ARM backend, fixed "byval" attribute support. 
Now even the small structures could be passed within byval (small enough
to be stored in GPRs).
In regression tests next function prototypes are checked:

PR15293:
  %artz = type { i32 }
  define void @foo(%artz* byval %s)
  define void @foo2(%artz* byval %s, i32 %p, %artz* byval %s2)
foo: "s" stored in R0
foo2: "s" stored in R0, "s2" stored in R2.

Next AAPCS rules are checked:
5.5 Parameters Passing, C.4 and C.5,
"ParamSize" is parameter size in 32bit words:
-- NSAA != 0, NCRN < R4 and NCRN+ParamSize > R4.
   Parameter should be sent to the stack; NCRN := R4.
-- NSAA != 0, and NCRN < R4, NCRN+ParamSize < R4.
   Parameter stored in GPRs; NCRN += ParamSize.

llvm-svn: 181148
 2013-05-05 07:48:36 +00:00