M gnu-system.am => gnu-system.am +1 -0
@@ 327,6 327,7 @@ dist_patch_DATA = \
gnu/packages/patches/flex-bison-tests.patch \
gnu/packages/patches/gawk-shell.patch \
gnu/packages/patches/gcc-cross-environment-variables.patch \
+ gnu/packages/patches/gcc-fix-pr61801.patch \
gnu/packages/patches/gd-mips64-deplibs-fix.patch \
gnu/packages/patches/glib-tests-desktop.patch \
gnu/packages/patches/glib-tests-homedir.patch \
M gnu/packages/gcc.scm => gnu/packages/gcc.scm +2 -1
@@ 268,7 268,8 @@ Go. It also includes runtime support libraries for these languages.")
version "/gcc-" version ".tar.bz2"))
(sha256
(base32
- "07hg10zs7gnqz58my10ch0zygizqh0z0bz6pv4pgxx45n48lz3ka"))))))
+ "07hg10zs7gnqz58my10ch0zygizqh0z0bz6pv4pgxx45n48lz3ka"))
+ (patches (list (search-patch "gcc-fix-pr61801.patch")))))))
(define-public gcc-4.9
(package (inherit gcc-4.7)
A gnu/packages/patches/gcc-fix-pr61801.patch => gnu/packages/patches/gcc-fix-pr61801.patch +25 -0
@@ 0,0 1,25 @@
+GCC bug fix for <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61801>.
+Initially discussed at
+ <http://lists.gnu.org/archive/html/guix-devel/2014-09/msg00283.html>.
+Patch from <https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=212740>.
+
+2014-07-17 Richard Biener <rguenther@suse.de>
+
+ PR rtl-optimization/61801
+
+ * sched-deps.c (sched_analyze_2): For ASM_OPERANDS and
+ ASM_INPUT don't set reg_pending_barrier if it appears in a
+ debug-insn.
+
+--- gcc-4_8-branch/gcc/sched-deps.c 2014/07/17 07:48:49 212739
++++ gcc-4_8-branch/gcc/sched-deps.c 2014/07/17 07:49:44 212740
+@@ -2744,7 +2744,8 @@
+ Consider for instance a volatile asm that changes the fpu rounding
+ mode. An insn should not be moved across this even if it only uses
+ pseudo-regs because it might give an incorrectly rounded result. */
+- if (code != ASM_OPERANDS || MEM_VOLATILE_P (x))
++ if ((code != ASM_OPERANDS || MEM_VOLATILE_P (x))
++ && !DEBUG_INSN_P (insn))
+ reg_pending_barrier = TRUE_BARRIER;
+
+ /* For all ASM_OPERANDS, we must traverse the vector of input operands.