Commit Graph

4 Commits

Author SHA1 Message Date
Matt Arsenault 09cca093a3 AMDGPU: Update for changed subtarget feature name
llvm-svn: 292838
2017-01-23 22:31:14 +00:00
Yaxun Liu d3e85b98be AMDGPU: Fix target options fp32/64-denormals
Fix target options for fp32/64-denormals so that

+fp64-denormals is set if fp64 is supported
-fp32-denormals if fp32 denormals is not supported, or -cl-denorms-are-zero is set
+fp32-denormals if fp32 denormals is supported and -cl-denorms-are-zero is not set

If target feature fp32/64-denormals is explicitly set, they will override default options and options deduced from -cl-denorms-are-zero.

Differential Revision: https://reviews.llvm.org/D24512

llvm-svn: 281357
2016-09-13 17:37:09 +00:00
Yaxun Liu 2c17e82bc7 [OpenCL][AMDGPU] Add support for -cl-denorms-are-zero
Adjust target features for amdgcn target when -cl-denorms-are-zero is set.

Denormal support is controlled by feature strings fp32-denormals fp64-denormals in amdgcn target. If -cl-denorms-are-zero is not set and the command line does not set fp32/64-denormals feature string, +fp32-denormals +fp64-denormals will be on for GPU's supporting them.

A new virtual function virtual void TargetInfo::adjustTargetOptions(const CodeGenOptions &CGOpts, TargetOptions &TargetOpts) const is introduced to allow adjusting target option by codegen option.

Differential Revision: https://reviews.llvm.org/D22815

llvm-svn: 278151
2016-08-09 19:43:38 +00:00
Tom Stellard f414fb75b0 Driver: Implement -cl-denorms-are-zero
This is currently a no-op, which is allowed by the OpenCL specification.

llvm-svn: 216179
2014-08-21 13:58:36 +00:00