Revert "gcc: add patch to workaround aginst bug GCC-49423" not more needed if we dont build RTL8723AU

This reverts commit 46b82168713d454e584528f69b63289423a39f90.

packages/lang/gcc/patches/gcc-initial-attempt-at-fixing-push_minipool_fix-ICE-2.patch

@@ -1,118 +0,0 @@
-Date: Tue, 18 Jun 2013 16:42:13 +0100
-From: Julian Brown <julian at codesourcery dot com>
-To: <gcc-patches at gcc dot gnu dot org>, Richard Earnshaw <Richard dot Earnshaw at arm dot com>,	Ramana Radhakrishnan <ramrad01 at arm dot com>
-Subject: [PATCH, ARM] Reintroduce minipool ranges for zero-extension insn patterns
-
-Hi,
-
-The following patch removed pool_range/neg_pool_range attributes from
-several instructions as a cleanup, which I believe to have been
-incorrect:
-
-http://gcc.gnu.org/ml/gcc-patches/2010-07/msg01036.html
-
-On a Mentor-local branch, this caused problems with instructions like:
-
-(insn 77 53 87 (set (reg:SI 8 r8 [orig:197 s.4 ] [197])
-        (zero_extend:SI (mem/u/c:HI (symbol_ref/u:SI ("*.LC0") [flags 0x2]) [7 S2 A16]))) [...] 161 {*arm_zero_extendhisi2_v6}
-     (nil))
-
-The reasoning behind the cleanup was that the instructions in question
-have no immediate constraints -- but the minipool code is used for more
-than just immediates, e.g. in the above case where a symbol reference
-("m") is loaded.
-
-I don't have a test case for the problem on mainline at present, but I
-believe it is still a latent bug. Tested with the default multilibs (ARM
-& Thumb mode) on arm-none-eabi, with no regressions. (The patch has
-also been tested with more multilibs on our local branches for a while,
-and I did ensure previously that it did not adversely affect Bernd's
-patch linked above.)
-
-OK to apply?
-
-Thanks,
-
-Julian
-
-ChangeLog
-
-	gcc/
-	* arm.md (*thumb1_zero_extendhisi2, *arm_zero_extendhisi2)
-	(*arm_zero_extendhisi2_v6, *thumb1_zero_extendqisi2)
-	(*thumb1_zero_extendqisi2_v6, *arm_zero_extendqisi2)
-	(*arm_zero_extendqisi2_v6): Add pool_range, neg_pool_range
-	attributes.
-
-
-Index: gcc/config/arm/arm.md
-===================================================================
---- a/gcc/config/arm/arm.md	(revision 200171)
-+++ b/gcc/config/arm/arm.md	(working copy)
-@@ -5313,7 +5313,8 @@
- 			 [(if_then_else (eq_attr "is_arch6" "yes")
- 				       (const_int 2) (const_int 4))
- 			 (const_int 4)])
--   (set_attr "type" "simple_alu_shift, load_byte")]
-+   (set_attr "type" "simple_alu_shift, load_byte")
-+   (set_attr "pool_range" "*,60")]
- )
- 
- (define_insn "*arm_zero_extendhisi2"
-@@ -5324,7 +5325,9 @@
-    #
-    ldr%(h%)\\t%0, %1"
-   [(set_attr "type" "alu_shift,load_byte")
--   (set_attr "predicable" "yes")]
-+   (set_attr "predicable" "yes")
-+   (set_attr "pool_range" "*,256")
-+   (set_attr "neg_pool_range" "*,244")]
- )
- 
- (define_insn "*arm_zero_extendhisi2_v6"
-@@ -5335,7 +5338,9 @@
-    uxth%?\\t%0, %1
-    ldr%(h%)\\t%0, %1"
-   [(set_attr "predicable" "yes")
--   (set_attr "type" "simple_alu_shift,load_byte")]
-+   (set_attr "type" "simple_alu_shift,load_byte")
-+   (set_attr "pool_range" "*,256")
-+   (set_attr "neg_pool_range" "*,244")]
- )
- 
- (define_insn "*arm_zero_extendhisi2addsi"
-@@ -5405,7 +5410,8 @@
-    uxtb\\t%0, %1
-    ldrb\\t%0, %1"
-   [(set_attr "length" "2")
--   (set_attr "type" "simple_alu_shift,load_byte")]
-+   (set_attr "type" "simple_alu_shift,load_byte")
-+   (set_attr "pool_range" "*,32")]
- )
- 
- (define_insn "*arm_zero_extendqisi2"
-@@ -5417,7 +5423,9 @@
-    ldr%(b%)\\t%0, %1\\t%@ zero_extendqisi2"
-   [(set_attr "length" "8,4")
-    (set_attr "type" "alu_shift,load_byte")
--   (set_attr "predicable" "yes")]
-+   (set_attr "predicable" "yes")
-+   (set_attr "pool_range" "*,4096")
-+   (set_attr "neg_pool_range" "*,4084")]
- )
- 
- (define_insn "*arm_zero_extendqisi2_v6"
-@@ -5428,7 +5436,9 @@
-    uxtb%(%)\\t%0, %1
-    ldr%(b%)\\t%0, %1\\t%@ zero_extendqisi2"
-   [(set_attr "type" "simple_alu_shift,load_byte")
--   (set_attr "predicable" "yes")]
-+   (set_attr "predicable" "yes")
-+   (set_attr "pool_range" "*,4096")
-+   (set_attr "neg_pool_range" "*,4084")]
- )
- 
- (define_insn "*arm_zero_extendqisi2addsi"
-
---MP_/ERKB4.gCWGZVf9oWJO6IZSe--
-