ca52f937ff
When compiling test-case gcc.dg/atomic/c11-atomic-exec-1.c, we run into
these ptxas errors:
...
line 100; error: Rounding modifier required for instruction 'cvt'
line 105; error: Rounding modifier required for instruction 'cvt'
...
The problem is that this move:
...
//(insn 13 11 14 2
// (set (reg:DF 28 [ _9 ])
// (subreg:DF (reg:TI 22 [ _1 ]) 0)) 9 {*movdf_insn}
// (nil))
cvt.f64.u64 %r28, %r22$0;
...
is emitted as cvt.f64.u64, while it should be a mov.b64 instead.
Fix this by handling this case in nvptx_output_mov_insn.
Tested on nvptx.
gcc/ChangeLog:
PR target/97158
* config/nvptx/nvptx.c (nvptx_output_mov_insn): Handle move from
DF subreg to DF reg.
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