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Add note about known code generate error in gcc6809 patches
author William Astle <lost@l-w.ca>
date Thu, 24 Mar 2016 19:08:25 -0600
parents c8ae69cdb5a9
children 8222f30a0781
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413:5dc9f9d47064 414:40de99bde5e0
91 8. Run "make install". Note that you will have to have your PATH variable 91 8. Run "make install". Note that you will have to have your PATH variable
92 for "root" set up correctly if your install prefix requires root privileges. 92 for "root" set up correctly if your install prefix requires root privileges.
93 93
94 The above is WOMM certified. YMMV. 94 The above is WOMM certified. YMMV.
95 95
96 NOTES ABOUT GCC6809
97 ===================
98
99 There is one known code generation bug with current versions of gcc6809. If
100 you are getting bad behaviour for some reason and are using optimization
101 (-O1 or higher, -Os), you may be hitting this bug. Adding "-fno-tree-ter"
102 after the "-O" options is known to correct this behaviour in some cases. If
103 someone who understands the gcc code is willing to look at it, patches for
104 the patch would be welcome (especially if that patch moves the base gcc
105 version upward). It is not clear whether this is a bug in the m6809 specific
106 code or the gcc core though it seems like it's in the gcc core.
107
108
96 NOTES ABOUT SPECIFIC PATCHES 109 NOTES ABOUT SPECIFIC PATCHES
97 ============================ 110 ============================
98 111
99 gcc6809lw-4.6.4-2.patch 112 gcc6809lw-4.6.4-2.patch
100 113