Commit Graph

7 Commits

Author SHA1 Message Date
Nico Weber b28ffd8f35 driver: Don't warn about assembler flags being unused when not assembling; different approach
This morally relands r365703 (and r365714), originally reviewed at
https://reviews.llvm.org/D64527, but with a different implementation.

Relanding the same approach with a fix for the revert reason got a bit
involved (see https://reviews.llvm.org/D65108) so use a simpler approach
with a more localized implementation (that in return duplicates code
a bit more).

This approach also doesn't validate flags for the integrated assembler
if the assembler step doesn't run.

Fixes PR42066.

Differential Revision: https://reviews.llvm.org/D65233

llvm-svn: 367165
2019-07-27 01:13:00 +00:00
Reid Kleckner a3aa67b7f9 Revert driver: Don't warn about assembler flags being unused when not assembling
This reverts r365703 (git commit 101c1afdfd)
and r365714.

This broke some autoconf-style assembler flags checks in the Linux
build:
https://github.com/ClangBuiltLinux/linux/issues/598

llvm-svn: 365956
2019-07-12 20:44:57 +00:00
Nico Weber 3daf58faa2 Attempt to fix bots after r365703
llvm-svn: 365714
2019-07-10 23:50:16 +00:00
Nico Weber 101c1afdfd driver: Don't warn about assembler flags being unused when not assembling
clang currently warns when passing flags for the assembler (e.g.
-Wa,-mbig-obj) to an invocation that doesn't run the assembler (e.g.
-E).

At first sight, that makes sense -- the flag really is unused. But many
other flags don't have an effect if no assembler runs (e.g.
-fno-integrated-as, -ffunction-sections, and many others), and those
currently don't warn. So this seems more like a side effect of how
CollectArgsForIntegratedAssembler() is implemented than like an
intentional feature.

Since it's a bit inconvenient when debugging builds and adding -E,
always call CollectArgsForIntegratedAssembler() to make sure assembler
args always get claimed. Currently, this affects only these flags:
-mincremental-linker-compatible, -mimplicit-it= (on ARM), -Wa, -Xassembler

It does have the side effect that assembler options now need to be valid
even if -E is passed. Previously, `-Wa,-mbig-obj` would error for
non-coff output only if the assembler ran, now it always errors. This
too makes assembler flags more consistent with all the other flags and
seems like a progression.

Fixes PR42066.

Differential Revision: https://reviews.llvm.org/D64527

llvm-svn: 365703
2019-07-10 22:29:35 +00:00
Renato Golin a74bbc7b36 Pass -I options to integrates and external assemblers
Fixes PR21000.

Patch by Artem Belevich.

llvm-svn: 242904
2015-07-22 15:32:36 +00:00
Artem Belevich c3e2fd7bea Revert "PR21000: pass -I options to assembler" as the test was failing on hexagon.
llvm-svn: 235919
2015-04-27 21:11:08 +00:00
Artem Belevich 8fe8ed56ee PR21000: pass -I options to assembler
Pass -I options to assembly so it can find files included with
.include.

Differential Revision: http://reviews.llvm.org/D7472

llvm-svn: 235915
2015-04-27 20:51:44 +00:00