From 2fe118d1049640ff2ef2c878053414d70c0ebcc3 Mon Sep 17 00:00:00 2001 From: nbd Date: Fri, 29 Apr 2005 13:43:03 +0000 Subject: remove unused gcc versions (<3.3.5, 3.4.0-3.4.2) git-svn-id: svn://svn.openwrt.org/openwrt/trunk@759 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../toolchain/gcc/3.4.1/400-mips-delay-slot.patch | 46 ---------------------- 1 file changed, 46 deletions(-) delete mode 100644 openwrt/toolchain/gcc/3.4.1/400-mips-delay-slot.patch (limited to 'openwrt/toolchain/gcc/3.4.1/400-mips-delay-slot.patch') diff --git a/openwrt/toolchain/gcc/3.4.1/400-mips-delay-slot.patch b/openwrt/toolchain/gcc/3.4.1/400-mips-delay-slot.patch deleted file mode 100644 index 8111dba185..0000000000 --- a/openwrt/toolchain/gcc/3.4.1/400-mips-delay-slot.patch +++ /dev/null @@ -1,46 +0,0 @@ -http://www.linux-mips.org/archives/linux-mips/2004-09/msg00000.html - -Atsushi Nemoto writes: ->/ Is this a get_user's problem or gcc's?/ - -The latter. gcc is putting the empty asm: - - __asm__ ("":"=r" (__gu_val)); - -into the delay slot of the call. - -Part of the problem is that gcc estimates the length of an asm to be the -number of instruction separators + 1. This means that it estimates the -asm above to be one instruction long, which is perhaps a little silly -for an empty string. - -But the real problem is that gcc should never trust this estimate anyway, -since each "instruction" could obviously be a multi-instruction macro. -gcc should certainly never put asms into delay slots. - -FWIW, I don't think the bug is specific to 3.3 or 3.4. It could -probably trigger for other gcc versions too. It is highly dependent -on scheduling though. - -The attached 3.4.x patch fixes the problem there, but if you want to work -around it for old versions, just avoid using empty asms if you can, -or make them volatile if you can't. - -Of course, the problem isn't confined to empty asms. If you have an asm -with a single, multi-instruction macro, gcc might try putting that in a -delay slot too. You should at least get an assembler warning in that case. - -Richard - - ---- gcc-3.4.1/gcc/config/mips/mips.md-orig 2004-09-02 10:38:36.000000000 -0500 -+++ gcc-3.4.1/gcc/config/mips/mips.md 2004-09-02 10:38:42.000000000 -0500 -@@ -251,7 +251,7 @@ - - ;; Can the instruction be put into a delay slot? - (define_attr "can_delay" "no,yes" -- (if_then_else (and (eq_attr "type" "!branch,call,jump") -+ (if_then_else (and (eq_attr "type" "!branch,call,jump,multi") - (and (eq_attr "hazard" "none") - (eq_attr "single_insn" "yes"))) - (const_string "yes") -- cgit v1.2.3