Fix typos in source code. Patch by Dmitriy (olshevskiy87@bk.ru).
Fixes BZ #349874


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15394 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/perf/tinycc.c b/perf/tinycc.c
index e4ca37f..5047923 100644
--- a/perf/tinycc.c
+++ b/perf/tinycc.c
@@ -3080,7 +3080,7 @@
  DEF_FP(mul)
 
  DEF_ASM(fcom)
- DEF_ASM(fcom_1) /* non existant op, just to have a regular table */
+ DEF_ASM(fcom_1) /* non existent op, just to have a regular table */
  DEF_FP1(com)
 
  DEF_FP(comp)
@@ -4412,7 +4412,7 @@
  DEF_FP(mul)
 
  DEF_ASM(fcom)
- DEF_ASM(fcom_1) /* non existant op, just to have a regular table */
+ DEF_ASM(fcom_1) /* non existent op, just to have a regular table */
  DEF_FP1(com)
 
  DEF_FP(comp)
@@ -16970,7 +16970,7 @@
     }
 }
 
-/* generate prolog and epilog code for asm statment */
+/* generate prolog and epilog code for asm statement */
 static void asm_gen_code(ASMOperand *operands, int nb_operands, 
                          int nb_outputs, int is_output,
                          uint8_t *clobber_regs,