gcov: remove support for GCC < 4.9

Since commit 8c771152c103 ("Documentation: update for gcc 4.9
requirement") the minimum supported version of GCC is gcc-4.9.  It's now
safe to remove this code.

Similar to commit b81c9b21fc68 ("gcov: Remove old GCC 3.4 support") but
that was for GCC 4.8 and this is for GCC 4.9.

Link: https://github.com/ClangBuiltLinux/linux/issues/427
Link: https://lkml.kernel.org/r/20201111030557.2015680-1-ndesaulniers@google.com
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/kernel/gcov/gcc_4_7.c b/kernel/gcov/gcc_4_7.c
index 53c67c87f141bb483e1baa7a20546dac9c997263..0da0aacc1f266b0cbc8bd463ed81ee1200e1a000 100644 (file)
--- a/kernel/gcov/gcc_4_7.c
+++ b/kernel/gcov/gcc_4_7.c
@@ -25,10 +25,8 @@
 #define GCOV_COUNTERS                  9
 #elif (__GNUC__ > 5) || (__GNUC__ == 5 && __GNUC_MINOR__ >= 1)
 #define GCOV_COUNTERS                  10
-#elif __GNUC__ == 4 && __GNUC_MINOR__ >= 9
-#define GCOV_COUNTERS                  9
 #else
-#define GCOV_COUNTERS                  8
+#define GCOV_COUNTERS                  9
 #endif
 
 #define GCOV_TAG_FUNCTION_LENGTH       3