dev:crosscompiler:backend:register_allocator
Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
| dev:crosscompiler:backend:register_allocator [2018/01/04 15:39] – [Register Usage] ursgraf | dev:crosscompiler:backend:register_allocator [2018/02/28 14:43] – [Determine Used Parameters] ursgraf | ||
|---|---|---|---|
| Line 39: | Line 39: | ||
| ===== Determine Used Parameters ===== | ===== Determine Used Parameters ===== | ||
| - | Parameters are passed in volatile registers. Some of them have to be copied to nonvolatile registers. Some parameters might not be used at all in a method. This can be determined in the exit set of the last node. If a value is null in that set the parameter with this index was never loaded and hence no register must be reserved. The following example demonstrates parameter usage. | + | Parameters are passed in volatile registers. Some of them have to be copied to nonvolatile registers. Some parameters might not be used at all in a method. This can be determined in the exit set of the last node. If a value is null in that set the parameter with this index was never loaded and hence no register must be reserved. The following example demonstrates parameter usage on a ppc platform. |
| <code java> | <code java> | ||
| float m2(long a, float b, double c, byte[] d, short e, int f, int g) { | float m2(long a, float b, double c, byte[] d, short e, int f, int g) { | ||
dev/crosscompiler/backend/register_allocator.txt · Last modified: 2019/08/29 16:53 by ursgraf
Page Tools
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 4.0 International
