dca8531821
Fix coordination for using R4 in Thumb1 as a scratch for SP restore.
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The logic for reserving R4 for use as a scratch needs to match that for
actually using it. Also, it's not necessary for immediate <=508, so adjust
the value checked.
llvm-svn: 132934
2011-06-13 21:18:25 +00:00
a8d177b2d4
Implement frame unwinding information emission for Thumb1. Not finished yet because there is no way given the constpool index to examine the actual entry: the reason is clones inserted by constant island pass, which are not tracked at all! The only connection is done during asmprinting time via magic label names which is really gross and needs to be eventually fixed.
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llvm-svn: 127104
2011-03-05 18:43:50 +00:00
e7410dd0d5
Preliminary support for ARM frame save directives emission via MI flags.
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This is just very first approximation how the stuff should be done
(e.g. ARM-only for now). More to follow.
llvm-svn: 127101
2011-03-05 18:43:32 +00:00
4bc5e38960
Teach frame lowering to ignore debug values after the terminators.
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llvm-svn: 123399
2011-01-13 21:28:52 +00:00
3904343c68
Even if we don't have 7 bytes of stack space we may need to save and
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restore the stack pointer from the frame pointer on thumbv6.
Fixes rdar://8819685
llvm-svn: 123196
2011-01-11 00:16:04 +00:00
2f93128109
Rename TargetFrameInfo into TargetFrameLowering. Also, put couple of FIXMEs and fixes here and there.
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llvm-svn: 123170
2011-01-10 12:39:04 +00:00
Jim Grosbach