https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102347
Bug ID: 102347
Summary: "fatal error: target specific builtin not available"
with MMA and LTO
Product: gcc
Version: 10.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: chip.kerchner at ibm dot com
CC: marxin at gcc dot gnu.org
Target Milestone: ---
I'm seeing MMA problems with LTO. With this simple program (main.ii)
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#pragma GCC target "cpu=power10"
int main() {
float *b;
__vector_quad c;
__builtin_mma_disassemble_acc(b, &c);
return 0;
}
----------------------
And this compile
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g++ -flto=auto -mcpu=power9 main.ii
----------------------
I'm seeing this error (which does NOT occur without LTO)
----------------------
lto1: error: '__builtin_mma_xxmfacc_internal' requires the '-mmma' option
lto1: fatal error: target specific builtin not available
compilation terminated.
----------------------
