Displaying 2 results from an estimated 2 matches for "csr_aapcs".
2017 Nov 11
2
Update control flow graph when splitting a machine basic block?
...f a basic block either, until yesterday LLVM Release 4.0.0 produced the following machine basic block before the pass ARMConstantIslands is run:
bb.1.if.end:
successors: %bb.3.for.body(0x80000000)
liveins: %r4
%r0 = tMOVr %r4, 14, _, debug-location !23
tBL 14, _, $__aeabi_i2d, csr_aapcs, implicit-def dead %lr, implicit %sp, implicit %r0, implicit-def %sp, implicit-def %r0, implicit-def %r1, debug-location !23
tBL 14, _, @sqrt, csr_aapcs, implicit-def dead %lr, implicit %sp, implicit %r0, implicit %r1, implicit-def %sp, implicit-def %r0, implicit-def %r1, debug-location !24...
2017 Nov 11
2
Update control flow graph when splitting a machine basic block?
> The right way to update the CFG very much depends on how you're
> transforming it.
I would like to export the CFG for control flow checking.
Theoretically, it should be possible for a compiler to know every target of every control flow instruction, except for computed targets that are not known at compile-time.
When a machine basic block is split between two branches, as shown below: