Subzero: x8664: Fix a "uitofp i32 to double" lowering error.

Subzero: x8664: Fix a "uitofp i32 to double" lowering error.

The movzx instruction in the lowering sequence should not be allowed to be elided.

BUG= https://bugs.chromium.org/p/nativeclient/issues/detail?id=4379
R=jpp@chromium.org

Committed: https://gerrit.chromium.org/gerrit/gitweb?p=native_client/pnacl-subzero.git;a=commit;h=74bfa8712543f32b75bbeb0ab0d43ec599d02059

[Jim Stichnoth, 2016-09-12 23:38:24]

Description was changed from

==========
Subzero: x8664: Fix a "uitofp i32 to double" lowering error.

BUG= https://bugs.chromium.org/p/nativeclient/issues/detail?id=4379
==========

to

==========
Subzero: x8664: Fix a "uitofp i32 to double" lowering error.

The movzx instruction in the lowering sequence should not be allowed to be
elided.

BUG= https://bugs.chromium.org/p/nativeclient/issues/detail?id=4379
==========

[Jim Stichnoth, 2016-09-12 23:38:24]

stichnot@chromium.org changed reviewers:
+ jpp@chromium.org

[Jim Stichnoth, 2016-09-12 23:39:34]

John - does this look right?  Can you think of other _movzx() that should also
not be elided?

[John, 2016-09-13 00:08:36]

lgtm

[Jim Stichnoth, 2016-09-13 02:11:45]

Description was changed from

==========
Subzero: x8664: Fix a "uitofp i32 to double" lowering error.

The movzx instruction in the lowering sequence should not be allowed to be
elided.

BUG= https://bugs.chromium.org/p/nativeclient/issues/detail?id=4379
==========

to

==========
Subzero: x8664: Fix a "uitofp i32 to double" lowering error.

The movzx instruction in the lowering sequence should not be allowed to be
elided.

BUG= https://bugs.chromium.org/p/nativeclient/issues/detail?id=4379
R=jpp@chromium.org

Committed:
https://gerrit.chromium.org/gerrit/gitweb?p=native_client/pnacl-subzero.git;a...
==========

[Jim Stichnoth, 2016-09-13 02:11:46]

Committed patchset #1 (id:1) manually as
74bfa8712543f32b75bbeb0ab0d43ec599d02059 (presubmit successful).