Though I have done extensive testing, it is possible that this will break
things in configs I can't test. Please let me know if this causes a problem
and I'll fix it ASAP.
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on setjmp calls and restores it on longjmp calls (both of which require syscalls).
This makes the calls REALLY slow. Use _setjmp/_longjmp instead. This speeds up
hexxagon from 120.31s to 15.68s: from 5.53x slower than GCC to 28% faster than GCC.
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specified. The various *imm operands defined by PPC are really all i32,
even though the actual immediate is restricted to a smaller value in it.
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with incoming arguments instead of the pregs themselves. This fixes
the scheduler from causing problems by moving a copyfromreg for an argument
to after a select_cc node (now it can, and bad things won't happen).
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with copies, leading to code like this:
lwz r4, 380(r1)
or r10, r4, r4 ;; Last use of r4
By teaching the PPC backend how to fold spills into copies, we now get this
code:
lwz r10, 380(r1)
wow. :)
This reduces a testcase nate sent me from 1505 instructions to 1484.
Note that this could handle FP values but doesn't currently, for reasons
mentioned in the patch
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is zero. This lets the register allocator elide some copies in some cases.
This implements CodeGen/PowerPC/rlwimi-commute.ll
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1. Add support for defining Pattern's, which can match expressions when there
is no instruction that directly implements something. Instructions usually
implicitly define patterns.
2. Add support for defining SDNodeXForm's, which are node transformations.
This seperates the concept of a node xform out from the existing predicate
support.
Using this new stuff, we add a few instruction patterns, one for testing, and
two for OR/XOR by an arbitrary immediate.
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the rest of the instructions, add comment markers to seperate portions of
the file into logical parts
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'' is not a recognized processor for this target (ignoring processor)
Default to "generic" instead of "" for the default CPU.
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'' is not a recognized processor for this target (ignoring processor)
instead of:
is not a recognized processor for this target (ignoring processor)
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are allowed to generate 64-bit-only PowerPC instructions for 32 bit hosts,
such as the PowerPC 970.
This speeds up 189.lucas from 81.99 to 32.64 seconds.
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