Uses the freeze instruction available in LLVM 10.0+. If we don't freeze undef/
poison values before using them in a calculation (even if that calculation is
something like "and 0", which masks the result completely), the result will
still be undef/poison and will keep propagating.
+ added support for constructing target triplets
* pass "-target triplet" when using an LLVM assembler
o removed no longer needed $DARWINVERSION and $ARCH parameters
* consistently use as_clang_gas when clang is used to assembler GAS-style
assembly, and rename as_llcm_clang to as_clang_llvm (for consistency)
* support pipe assembling when using clang on *nix in all cases
git-svn-id: trunk@45807 -
* rename the m68k/PowerPC-MacOS targets to m68k/PowerPC-MacOSClassic
* repurpose the AArch64/Darwin target for AArch64/macOS
o make AArch64-Darwin default target for a hosted AArch64-Darwin compiler
git-svn-id: trunk@45758 -
* adapted string used for macOS/iOS version in triple in llvm IR files to
what clang expects (always a single digit patch version)
git-svn-id: branches/debug_eh@40431 -
convert one def to another, including information regarding whether
it should be done via an intermediate integer typecast
* use this routine in hlcgllvm
git-svn-id: branches/hlcgllvm@28116 -
o handle parameters and function results divided over multiple paralocs,
including generating fake recorddefs that represent
o fixed zero/sign extension handling
o properly handle difference between procdefs as printed for the
implementation, an alias declaration or a procvar definition
git-svn-id: branches/hlcgllvm@27009 -
basic block must end with a terminator instruciton (such as a branch) ->
when emitting a label, check whether the previous instruction is a
terminator instruction and if not, add an unconditional branch to the
label we are adding.
o Implemented at the tcg instead of at the thlcgobj level because
a) these methods don't need any high level type information
b) implementing them in thlcgobj would require making thlcg.a_label()
virtual and ensuring that no-one ever calls cg.a_label() in any
generic code
git-svn-id: branches/hlcgllvm@26038 -
o opcodes + string representation
o llvm string representations of targets supported by fpc
o supported fpc optimisations
o list of supported LLVM versions (currently only targeting 3.3)
git-svn-id: branches/hlcgllvm@26035 -
