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3 Commits

Author SHA1 Message Date
Simon Dardis 1dcb911061 [mips] Restrict tail call optimization 
The tail call optimization was being used without proper consideration of
ABI requirements for saving and restoring the GP. This patch restricts tail
call optimization to functions within the same translation unit.

Reviewers: vkalintiris

Differential Revision: https://reviews.llvm.org/D24763

llvm-svn: 287505
 2016-11-20 21:23:08 +00:00
Simon Dardis d2ed8abb15 [mips] Disable tail calls temporarily 
Disable tail calls while the remaining bugs are fixed. Enable only for tests.

Reviewers: vkalintiris

Differential Review: https://reviews.llvm.org/D24912

llvm-svn: 282487
 2016-09-27 13:15:54 +00:00
Simon Dardis ea3431598e [mips] Correct tail call encoding for MIPSR6 
r277708 enabled tails calls for MIPS but used the 'jr' instruction when the 
jump target was held in a register. For MIPSR6, 'jalr $zero, $reg' should
have been used. Additionally, add missing patterns for external and global
symbols for tail calls.

Reviewers: dsanders, vkalintiris

Differential Review: https://reviews.llvm.org/D23301

llvm-svn: 279064
 2016-08-18 13:22:43 +00:00