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5 Commits

Author SHA1 Message Date
Eli Friedman eb1bd24134 Some additional tests for Thumb atomic load and store (which I somehow forgot to commit earlier). 
llvm-svn: 140074
 2011-09-19 22:02:33 +00:00
Eli Friedman ee8f14a799 Some legalization fixes for atomic load and store. 
llvm-svn: 139851
 2011-09-15 21:20:49 +00:00
Eli Friedman e978d2f644 Relax the MemOperands on atomics a bit. Fixes -verify-machineinstrs failures for atomic laod/store on ARM. 
(The fix for the related failures on x86 is going to be nastier because we actually need Acquire memoperands attached to the atomic load instrs, etc.)

llvm-svn: 139221
 2011-09-07 02:23:42 +00:00
Eli Friedman f3dd6da7a8 Don't fast-isel for atomic load/store; some cases require extra handling missing from fast-isel. 
llvm-svn: 139044
 2011-09-02 22:33:24 +00:00
Eli Friedman 452aae6202 Atomic load/store on ARM/Thumb. 
I don't really like the patterns, but I'm having trouble coming up with a
better way to handle them.

I plan on making other targets use the same legalization
ARM-without-memory-barriers is using... it's not especially efficient, but
if anyone cares, it's not that hard to fix for a given target if there's
some better lowering.

llvm-svn: 138621
 2011-08-26 02:59:24 +00:00