[all-commits] [llvm/llvm-project] 8d7ccb: Set the floating point status register as reserved
Pengfei Wang via All-commits
all-commits at lists.llvm.org
Sun Nov 3 23:15:58 PST 2019
Author: Pengfei Wang <pengfei.wang at intel.com>
Date: 2019-11-03 (Sun, 03 Nov 2019)
Set the floating point status register as reserved
This patch sets the FPSW (X87 floating-point status register) as a reserved
physical register and fix the test failure caused by [[ https://reviews.llvm.org/D68854| D68854 ]].
Before this patch, some tests will fail because it implicit uses FPSW without
define it. Setting the FPSW as a reserved physical register will skip liveness
analysis because it is always live.
Reviewers: pengfei, craig.topper
Reviewed By: craig.topper
Subscribers: craig.topper, hiraditya, llvm-commits
Patch by LiuChen.
Differential Revision: https://reviews.llvm.org/D69784
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