[patch] gcc 4.9.0 patch from upstream

gcc-4.9.0-Bug-61801-sched2-miscompiles-syscall-sequence-with-g.patch (text/plain), 628 bytes, created by Mark Wright on 2014-08-06 00:49:04 UTC

--- gcc-4.9.0-orig/gcc/sched-deps.c	2014-02-06 05:42:19.000000000 +1100
+++ gcc-4.9.0/gcc/sched-deps.c	2014-08-06 10:27:55.933209847 +1000
@@ -2750,7 +2750,8 @@
 	   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.