https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93371
Bug ID: 93371
Summary: -ffile-prefix-map ignored with assembly files
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: driver
Assignee: unassigned at gcc dot gnu.org
Reporter: comexk at gmail dot com
Target Milestone: ---
When using the GCC frontend to invoke GNU as, GCC passes through
-fdebug-prefix-map (as --debug-prefix-map), but ignores -ffile-prefix-map.
-ffile-prefix-map is supposed to be "equivalent to specifying all the
individual -f*-prefix-map options."
Most likely, GCC should be changed to pass --debug-prefix-map to as when the
driver is passed -ffile-prefix-map (specifically in the definition of ASM_MAP
in gcc/gcc.c). An alternative might be to add a --file-prefix-map option to
GNU as and pass that instead; however, the only other type of prefix map is
-fmacro-prefix-map, and that doesn't apply to raw as.
