diff mbox series

nvptx: Back-end portion of a fix for PR target/104489.

Message ID 034701d81f33$8a23ba20$9e6b2e60$@nextmovesoftware.com
State New
Headers show
Series nvptx: Back-end portion of a fix for PR target/104489. | expand

Commit Message

Roger Sayle Feb. 11, 2022, 10:38 a.m. UTC 
This one line fix/tweak is the back-end specific change for a fix for

PR target/104489, that allows the ISA for GCC's nvptx backend to be bumped

to sm_53.  The machine-independent middle-end pieces were posted here:

https://gcc.gnu.org/pipermail/gcc-patches/2022-February/590139.html

 

This patch has been tested on nvptx-none hosted on x86_64-pc-linux-gnu,

together with the above middle-end patch and changes identical to those

described by Tom de Vries in the PR, with make and make -k check, where

the build now completes, and there are no regressions in the testsuite.

Ok for mainline?

 

 

2022-02-11  Roger Sayle  <roger@nextmovesoftware.com>

 

gcc/ChangeLog

PR target/104489

* config/nvptx/nvptx.md (*movhf_insn): Add subregs_ok attribute.

 

 

Thanks in advance,

Roger

--

Comments

Tom de Vries Feb. 22, 2022, 3:45 p.m. UTC | #1 
On 2/11/22 11:38, Roger Sayle wrote:
> This one line fix/tweak is the back-end specific change for a fix for
> 
> PR target/104489, that allows the ISA for GCC's nvptx backend to be bumped
> 
> to sm_53.  The machine-independent middle-end pieces were posted here:
> 
> https://gcc.gnu.org/pipermail/gcc-patches/2022-February/590139.html
> 
> This patch has been tested on nvptx-none hosted on x86_64-pc-linux-gnu,
> 
> together with the above middle-end patch and changes identical to those
> 
> described by Tom de Vries in the PR, with make and make -k check, where
> 
> the build now completes, and there are no regressions in the testsuite.
> 
> Ok for mainline?
> 
> 2022-02-11  Roger Sayle  <roger@nextmovesoftware.com>
> 
> gcc/ChangeLog
> 
> PR target/104489
> 
> * config/nvptx/nvptx.md (*movhf_insn): Add subregs_ok attribute.
> 

LGTM.

Thanks,
- Tom
diff mbox series

Patch

diff --git a/gcc/config/nvptx/nvptx.md b/gcc/config/nvptx/nvptx.md
index 92768dd..3f1a4a6 100644
--- a/gcc/config/nvptx/nvptx.md
+++ b/gcc/config/nvptx/nvptx.md
@@ -285,7 +285,8 @@ 
   "@
    %.\\tmov.b16\\t%0, %1;
    %.\\tld.b16\\t%0, %1;
-   %.\\tst.b16\\t%0, %1;")
+   %.\\tst.b16\\t%0, %1;"
+  [(set_attr "subregs_ok" "true")])
 
 (define_expand "movhf"
   [(set (match_operand:HF 0 "nonimmediate_operand" "")