These are apparently only defined in OpenCL 1.2.
HALF_MAX, HALF_MIN and HALF_EPSILON are currently omitted. Clang does
not seem to support the ‘h’ suffix for half float constants even with
the cl_khr_fp16 extension enabled.
Reviewed-by: Tom Sellard <tom@stellard.net>
llvm-svn: 211579
Add these out-of-order in clc.h so we can use these in other headers.
v2: Take into account the lack of a definition in OpenCL 1.0
Reviewed-by: Tom Stellard <tom@stellard.net>
llvm-svn: 211578
v2: - use quotes instead of <>
- add include to r600/lib/math/nextafter.c changed
Reviewed-by: Tom Stellard <tom@stellard.net>
Reviewed-by: Aaron Watry <awatry@gmail.com>
llvm-svn: 211576
v3: change __builtin_nanf() to __builtin_nanf("")
This doesn't work yet, but it was agreed to commit as-is with the logic
that "broken" is better than "completely missing" and this should be
fixed in clang.
v2: use __builtin_inff() and also add nan/huge_val definitions
Signed-off-by: Aaron Watry <awatry@gmail.com>
llvm-svn: 211065
Use separate implementations instead of a macro
to ensure the constant multiplied with is of
higher precision.
v2: Use the correct formula, spotted by Dan Liew <daniel.liew@imperial.ac.uk>
Reviewed-by: Aaron Warty <awatry@gmail.com>
Reviewed-by: Tom Stellard <tom@stellard.net>
llvm-svn: 210891
OpenCL C lang says that trunc rounds towards zero.
llvm.trunc.* intrinsic rounds to integer not larger in magnitude.
These definitions are equivalent.
Patch by: Jan Vesely
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
llvm-svn: 197769
Some function definitions were using _CLC_DECL, which meant that they
weren't being marked as always_inline.
Reviewed-by and Tested-by: Aaron Watry <awatry@gmail.com>
llvm-svn: 193754
There are two implementations of nextafter():
1. Using clang's __builtin_nextafter. Clang replaces this builtin with
a call to nextafter which is part of libm. Therefore, this
implementation will only work for targets with an implementation of
libm (e.g. most CPU targets).
2. The other implementation is written in OpenCL C. This function is
known internally as __clc_nextafter and can be used by targets that
don't have access to libm.
llvm-svn: 192383
We already have a working mul_hi, and the spec gives us the implementation as:
Returns mul_hi(a,b)+c.
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 190211
Everything except long/ulong is handled by just casting to the next larger type,
doing the math and then shifting/casting the result.
For 64-bit types, we break the high/low parts of each operand apart, and do
a FOIL-based multiplication.
v2:
Discard the stack-overflow implementation due to copyright concerns.
- The implementation is still FOIL-based, but discards the previous code.
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 188684
rhadd = (x+y+1)>>1
Implemented as:
(x>>1) + (y>>1) + ((x&1)|(y&1))
This prevents us having to do assembly addition and overflow detection
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 188477
(x + y) >> 1 gets changed to:
(x>>1) + (y>>1) + (x&y&1)
Saves us having to do any llvm assembly and overflow checking in the addition.
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 188476
Not hooked up to R600 yet due to current lack of support, at least on EG.
Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 188181
Jeroen Ketema