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Commit Graph

7 Commits

Author SHA1 Message Date
Justin Holewinski
a1dd1dd26e PTX: Always use registers for return values, but use .param space for device
parameters if SM >= 2.0

- Update test cases to be more robust against register allocation changes
- Bump up the number of registers to 128 per type
- Include Python script to re-generate register file with any number of
  registers

llvm-svn: 133736
2011-06-23 18:10:13 +00:00
Justin Holewinski
c515f1b903 PTX: Adjust rounding modes
* rounding modes for fp add, mul, sub now use .rn
* float -> int rounding correctly uses .rzi not .rni
* 32bit fdiv for sm13 uses div.rn (instead of div.approx)
* 32bit fdiv for sm10 now uses div (instead of div.approx)

Approx is not IEEE 754 compatible (and should be optionally set by a flag to the backend instead). The .rn rounding modifier is the PTX default anyway, but it's better to be explicit.

All these modifiers should be available by using __fmul_rz functions for example, but support will need to be added for this in the backend.

Patch by Dan Bailey

llvm-svn: 133253
2011-06-17 12:12:42 +00:00
Justin Holewinski
32a7bad9db PTX: Finish new calling convention implementation
llvm-svn: 133172
2011-06-16 17:50:00 +00:00
Justin Holewinski
dc1965a16c PTX: Add intrinsics to list of built-in intrinsics, which allows them to be
used by Clang.  To help Clang integration, the PTX target has been split
     into two targets: ptx32 and ptx64, depending on the desired pointer size.

- Add GCCBuiltin class to all intrinsics
- Split PTX target into ptx32 and ptx64

llvm-svn: 129851
2011-04-20 15:37:17 +00:00
Che-Liang Chiou
2e7bb6da4c Extend initial support for primitive types in PTX backend
- Allow i16, i32, i64, float, and double types, using the native .u16,
  .u32, .u64, .f32, and .f64 PTX types.
- Allow loading/storing of all primitive types.
- Allow primitive types to be passed as parameters.
- Allow selection of PTX Version and Shader Model as sub-target attributes.
- Merge integer/floating-point test cases for load/store.
- Use .u32 instead of .s32 to conform to output from NVidia nvcc compiler.

Patch by Justin Holewinski

llvm-svn: 126824
2011-03-02 03:20:28 +00:00
Che-Liang Chiou
4026d01040 Add preliminary support for .f32 in the PTX backend.
- Add appropriate TableGen patterns for fadd, fsub, fmul.
- Add .f32 as the PTX type for the LLVM float type.
- Allow parameters, return values, and global variable declarations
  to accept the float type.
- Add appropriate test cases.

Patch by Justin Holewinski

llvm-svn: 126636
2011-02-28 06:34:09 +00:00
Che-Liang Chiou
f8ffd59ccb Add simple arithmetics and %type directive for PTX
llvm-svn: 119485
2010-11-17 08:08:49 +00:00