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Override getTypeForExtReturn so that functions returning
an i32 typed value have it sign extended on MIPS64.
Also provide patterns to get rid of unneeded sign extensions
for arithmetic instructions which implicitly sign extend
their results.
Differential Revision: https://reviews.llvm.org/D48374
llvm-svn: 338019
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binary bitwise instructions.
It introduced two regressions on 64-bit big-endian targets running under N32
(MultiSource/Benchmarks/tramp3d-v4/tramp3d-v4, and
MultiSource/Applications/kimwitu++/kc) The issue is that on 64-bit targets
comparisons such as BEQ compare the whole GPR64 but incorrectly tell the
instruction selector that they operate on GPR32's. This leads to the
elimination of i32->i64 extensions that are actually required by
comparisons to work correctly.
There's currently a patch under review that fixes this problem.
llvm-svn: 243984
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Summary:
Previously, the presence of KILL instructions would block valid candidates
from filling a specific delay slot. With the elimination of the KILL
instructions, in the appropriate range, we are able to fill more slots and
keep the information from future def/use analysis consistent.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: hfinkel, llvm-commits
Differential Revision: http://reviews.llvm.org/D7724
llvm-svn: 235183
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