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6 Commits

Author SHA1 Message Date
Sanjay Patel e9b1d16a8c [x86] auto-generate complete checks for tests; NFC 
These all used 'CHECK-NOT' which isn't necessary if we have complete checks.
There were also over-specifications in the RUN params such as CPU model.

llvm-svn: 307033
 2017-07-03 15:27:19 +00:00
Rafael Espindola 94a2c5642d Rename features to match what gcc and clang use. 
There is no advantage in being different and using the same names simplifies
clang a bit.

llvm-svn: 189141
 2013-08-23 20:21:34 +00:00
Michael Liao a486a11dcf Add support of RDSEED defined in AVX2 extension 
llvm-svn: 178314
 2013-03-28 23:41:26 +00:00
Michael Liao 5fff5c7b26 Enhance boolean simplification to handle 16-/64-bit RDRAND 
- RDRAND always clears the destination value when a random value is not
  available (i.e. CF == 0). This value is truncated or zero-extended as
  the false boolean value to be returned. Boolean simplification needs
  to skip this 'zext' or 'trunc' node.

llvm-svn: 178312
 2013-03-28 23:38:52 +00:00
Michael Liao c3d5b21c39 Add boolean simplification support from CMOV 
- If a boolean value is generated from CMOV and tested as boolean value,
  simplify the use of test result by referencing the original condition.
  RDRAND intrinisc is one of such cases.

llvm-svn: 163516
 2012-09-10 16:36:16 +00:00
Michael Liao 5248e9913f add X86-specific DAG optimization to simplify boolean test 
- if a boolean test (X86ISD::CMP or X86ISD:SUB) checks a boolean value
  generated from X86ISD::SETCC, try to simplify the boolean value
  generation and checking by reusing the original EFLAGS with proper
  condition code
- add hooks to X86 specific SETCC/BRCOND/CMOV, the major 3 places
  consuming EFLAGS

part of patches fixing PR12312

llvm-svn: 161687
 2012-08-10 19:58:13 +00:00