decide whether condition is likely to be true this way:
x == 0 -> false
x < 0 -> false
x <= 0 -> false
x != 0 -> true
x > 0 -> true
x >= 0 -> true
llvm-svn: 136583
sub-library for the targets depended on the core target CodeGen library.
This completely undermined the careful work to separate the those
libraries, especially the MC-layer ones. This surfaced as circular
dependencies when the libraries were built as shared libraries where
CMake doesn't allow cycles.
This should fix PR10537. I'll watch the bots to see if there is fallout
on other platforms.
llvm-svn: 136565
globally scoped constructs. Also, round-trip these dependencies through
the LLVMConfig.cmake.in file thata is used by CMake-based clients of
"installed" (or built) LLVM trees.
llvm-svn: 136543
This includes registers like EFLAGS and ST0-ST7. We don't check for
liveness issues in the verifier and scavenger because registers will
never be allocated from these classes.
While in SSA form, we do care about the liveness of unallocatable
unreserved registers. Liveness of EFLAGS and ST0 neds to be correct for
MachineDCE and MachineSinking.
llvm-svn: 136541
This flag is true from isel to register allocation when the machine
function is required to be in SSA form. The TwoAddressInstructionPass
and PHIElimination passes clear the flag.
The SSA flag wil be used by the machine code verifier to check for SSA
form, and eventually an assertion can enforce it in +Asserts builds.
This will catch the common target error of creating machine code with
multiple defs of a virtual register.
llvm-svn: 136532
Fix the instruction encoding for operands. Refactor mode to use explicit
instruction definitions per FIXME to be more consistent with loads/stores.
Fix disassembler accordingly. Add tests.
llvm-svn: 136509
for targets that don't have an MC-ized disassembler. I'm suspicious that
this shouldn't actually be happening, but hoping to fix the CMake build
on macs first, and investigate why second.
llvm-svn: 136508
Make sure TernOpInits are unique and created only once. This will be
important for AVX/SIMD as many operators will be used to generate
patterns and other relevant data.
llvm-svn: 136496
Make sure BinOpInits are unique and created only once. This will be
important for AVX/SIMD as many operators will be used to generate
patterns and other relevant data.
llvm-svn: 136495
Make sure UnOpInits are unique and created only once. This will be
important for AVX/SIMD as many operators will be used to generate
patterns and other relevant data.
llvm-svn: 136494
Ensure ListInits are unique and only created once. This will be
important for AVX as lists will be used extensively to pass generic
patterns, prefix information and other things to lower-level
pattern-generation classes.
llvm-svn: 136493
Use a StringMap to ensure the StringInits are unique. This is
especially important for AVX where we will have many smallish
strings representing instruction prefixes, suffixes and the like.
llvm-svn: 136491
Remove all non-const iterators from Init classes. This is another
step toward constifying Inits and ultimately turning them into
FoldingSetNodes.
llvm-svn: 136484
Create a std::string wrapper for use as a DenseMap key. DenseMap is
not safe in generate with strings, so this wrapper indicates that only
strings guaranteed not to have certain values should be used in the
DenseMap.
llvm-svn: 136481
