3 Commits

Author SHA1 Message Date
Tony Jiang
30a49d1a3d [Power9] Added support for the modsw, moduw, modsd, modud hardware instructions.
Note that if we need the result of both the divide and the modulo then we
compute the modulo based on the result of the divide and not using the new
hardware instruction.

Commit on behalf of STEFAN PINTILIE.
Differential Revision: https://reviews.llvm.org/D33940

llvm-svn: 305210
2017-06-12 17:58:42 +00:00
Hal Finkel
f4052340a4 [PowerPC] Replace cntlz[.] with cntlzw[.]
cntlz is the old POWER mnemonic. cntlzw is the PowerPC mnemonic.

This change fixes an issue when -no-integrated-as: The opcode cntlz is
unrecognized by gas

Alias the POWER mnemonic cntlz[.] to the PowerPC mnemonic cntlzw[.]
This is done for because the POWER cntlz mnemonic has be used by LLVM for
a very long time. We need to make sure that assembly programs
that are using the cntlz[.] do not break with this change.

Change PowerPC tests to reflect the insn change from cntlz to cntlzw.
Add assembly test to verify cntlz[.] is encoded correctly.

Patch by Tom Rix!

llvm-svn: 251489
2015-10-28 03:26:45 +00:00
Benjamin Kramer
c11fd3e775 [PPC] Disassemble little endian ppc instructions in the right byte order
PR24122. The test is simply a byte swapped version of ppc64-encoding.txt.

llvm-svn: 242288
2015-07-15 12:56:19 +00:00