Specifically, don't use vector select for masked store blend there,
but emit a call to a undefined __masked_store_blend_*() functions.
Added implementations of these functions to the sse4.h and generic-16.h
in examples/instrinsics. (Calls to these will never be generated with
LLVM 3.1).
More specifically, we do a proper masked store (rather than a load-
blend-store) unless we can determine that we're accessing a stack-allocated
"varying" variable. This fixes a number of nefarious bugs where given
code like:
uniform float a[21];
foreach (i = 0 … 21)
a[i] = 0;
We'd use a blend and in turn read past the end of a[] in the last
iteration.
Also made slight changes to inlining in aobench; this keeps compiles
to ~5s, versus ~45s without them (with this change).
Fixes issue #160.
Specialize the code for the innermost loop to not do any masking
computations for the innermost dimension for the iterations where
we are certainly working on a full vector's worth of data.
This fix improves performance/code quality of "foreach" such that
it's essentially the same as the equivalent "for" loop.
Fixes issue #151.
(i.e., stop just reusing the ones for AVX1).
For now the only difference is that the int/uint min/max
functions call the new intrinsic for that. Once gather is
available from LLVM, that will go here as well.
If we call a function pointer, CallInst::getCalledFunction() returns NULL; we
need to be careful about this case when we're matching various function calls
in optimization passes.
(Fixes a crash.)
Switches with both uniform and varying "switch" expressions are
supported. Switch statements with varying expressions and very
large numbers of labels may not perform well; some issues to be
filed shortly will track opportunities for improving these.
Previously, we would return immediately if the current basic block
was NULL; however, this is the wrong thing to do in that goto labels
and case/default labels in switch statements will establish a new
current basic block even if the current one is NULL.
Allow to run from the build directory even if it is not on the path
properly decode subprocess stdout/stderr as UTF-8
Added newlines that were mistakenly left out of print->sys.stdout.wriote() conversion in previous CL
Python 3:
- fixed error message comparison
- explicit list creation
Windows:
- forward/back slash annoyances
- added stdint.h with definitions for int32_t, int64_t
- compile_error_files and run_error_files were being appended to improperly
In short, we were inadvertently trying to emit each function's
code a second time if the function had a mask check at the start
of it. StmtList::EmitCode() was covering this error up by
not emitting code if the current basic block is NULL.
We now recognize patterns like (ptr + offset1 + offset2) as being
cases we can handle with the base_offsets variants of the gather/scatter
functions. (This can come up with multidimensional array indexing,
for example.)
Issue #150.
Really, we only have to be careful about the case where there is a vector of bools
(i.e. a mask) involved, since the size of that isn't known at compile-time.
(Currently, at least.)
As part of this, function declarations are no longer scoped (this is permitted
by the C standard, as it turns out.) So code like:
void foo() { void bar(); }
void bat() { bar(); }
Compiles correctly; the declaration of bar() in foo() is still available in the
definition of bar().
Fixes issue #129.
