From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexey Brodkin Date: Mon, 15 May 2017 18:56:57 +0300 Subject: [Buildroot] [PATCH] gcc: arc-2017.03-rc2: Fix "unrecognized supposed constant" error Message-ID: <20170515155657.22513-1-abrodkin@synopsys.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net This fixes the following problem: ------------------------------------>8-------------------------------- arc-linux-gcc -c -Os -fPIC iso9660.i iso9660.c: In function 'strip_trail': iso9660.c:155:1: error: unrecognized supposed constant } ^ (unspec:SI [ (symbol_ref:SI ("*.LANCHOR1") [flags 0x182]) ] ARC_UNSPEC_GOTOFFPC) iso9660.c:155:1: internal compiler error: in arc_legitimate_constant_p, at config/arc/arc.c:6028 ------------------------------------>8-------------------------------- Found by Buildroot autobuilder [1]. The fix [2] is in arc-2017.03 development branch of ARC GCC and once it becomes a part the next release of ARC tools this should be removed from Buildroot. [1] http://autobuild.buildroot.net/results/c90/c909e8c397ab972b6aa4d370572cad4fae284d00/build-end.log [2] https://github.com/foss-for-synopsys-dwc-arc-processors/gcc/commit/139fed9d29ab935b3bc5159c0bdf7b8b8a39442d Signed-off-by: Alexey Brodkin --- ...-return-false-for-any-PIC-related-unspecs.patch | 58 ++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 package/gcc/arc-2017.03-rc2/0001-FIX-PIC-return-false-for-any-PIC-related-unspecs.patch diff --git a/package/gcc/arc-2017.03-rc2/0001-FIX-PIC-return-false-for-any-PIC-related-unspecs.patch b/package/gcc/arc-2017.03-rc2/0001-FIX-PIC-return-false-for-any-PIC-related-unspecs.patch new file mode 100644 index 0000000000..ea9708240e --- /dev/null +++ b/package/gcc/arc-2017.03-rc2/0001-FIX-PIC-return-false-for-any-PIC-related-unspecs.patch @@ -0,0 +1,58 @@ +From 139fed9d29ab935b3bc5159c0bdf7b8b8a39442d Mon Sep 17 00:00:00 2001 +From: Claudiu Zissulescu +Date: Mon, 15 May 2017 05:05:27 -0400 +Subject: [PATCH] [FIX] PIC: return false for any PIC related unspecs + +--- + gcc/config/arc/arc.c | 9 ++++----- + gcc/testsuite/gcc.target/arc/pr9001191897.c | 10 ++++++++++ + 2 files changed, 14 insertions(+), 5 deletions(-) + create mode 100644 gcc/testsuite/gcc.target/arc/pr9001191897.c + +diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c +index 3d53a667d37f..b00126f4d2c4 100644 +--- a/gcc/config/arc/arc.c ++++ b/gcc/config/arc/arc.c +@@ -6056,11 +6056,8 @@ arc_legitimate_constant_p (machine_mode mode, rtx x) + return true; + + case NEG: +- /* Assembler does not understand -(@label at gotoff). Also, we do +- not print such pic address constant. */ +- if (GET_CODE (XEXP (x, 0)) == UNSPEC) +- return false; + return arc_legitimate_constant_p (mode, XEXP (x, 0)); ++ + case PLUS: + case MINUS: + { +@@ -6090,7 +6087,9 @@ arc_legitimate_constant_p (machine_mode mode, rtx x) + case UNSPEC_TLS_IE: + return true; + default: +- break; ++ /* Any other unspec ending here are pic related, hence the above ++ constant pic address checking returned false. */ ++ return false; + } + /* Fall through. */ + +diff --git a/gcc/testsuite/gcc.target/arc/pr9001191897.c b/gcc/testsuite/gcc.target/arc/pr9001191897.c +new file mode 100644 +index 000000000000..2b9e1689803f +--- /dev/null ++++ b/gcc/testsuite/gcc.target/arc/pr9001191897.c +@@ -0,0 +1,10 @@ ++/* { dg-do compile } */ ++/* { dg-skip-if "" { ! { clmcpu } } } */ ++/* { dg-options "-mcpu=arch2 -Os -fpic -mno-sdata -mno-indexed-loads -w" } */ ++a; ++c() { ++ static char b[25]; ++ for (; a >= 0; a--) ++ if (b[a]) ++ b[a] = '\0'; ++} +-- +2.7.4 + -- 2.11.0