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comparison extra/README @ 414:40de99bde5e0
Add note about known code generate error in gcc6809 patches
author | William Astle <lost@l-w.ca> |
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date | Thu, 24 Mar 2016 19:08:25 -0600 |
parents | c8ae69cdb5a9 |
children | 8222f30a0781 |
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413:5dc9f9d47064 | 414:40de99bde5e0 |
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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 |