search for: gr6

On Tue, 22 Jun 2004, Vladimir Prus wrote: > First, I attach two files -- LLVM asm and the asm for my target. The problem > with assembler is: on line 171 it uses register gr2, which is copied from gr6 > above, on line 161. The only predecessor of this basic block is jump on line > 90. The problem is that gr6 is not initialized in the interval from the > function entry till the jump. Okay, I see the problem. You need to tell the compiler that the conditional branches are terminators....

...n linearscan allocator. Of course I can't be 100% sure it's not some unobvious mistake on my part, so I'd like to hear your opinion. First, I attach two files -- LLVM asm and the asm for my target. The problem with assembler is: on line 171 it uses register gr2, which is copied from gr6 above, on line 161. The only predecessor of this basic block is jump on line 90. The problem is that gr6 is not initialized in the interval from the function entry till the jump. I also attach the debug dumps from my backend. The basic block in question is shortcirc_done.1 (line 198 in the lo...

Chris Lattner wrote: > On Tue, 22 Jun 2004, Vladimir Prus wrote: > > First, I attach two files -- LLVM asm and the asm for my target. The > > problem with assembler is: on line 171 it uses register gr2, which is > > copied from gr6 above, on line 161. The only predecessor of this basic > > block is jump on line 90. The problem is that gr6 is not initialized in > > the interval from the function entry till the jump. > > Okay, I see the problem. You need to tell the compiler that the > conditional branches...

Hello! Is there an (semi)automatic way to save registers used by a function? For example, on my target I have to store ar0-ar4 and gr0-gr4, gr5, gr6. For now I just emit huge prologue code to push them all to stack -- even if they are not modified at all. Is there a way to tell LLVM which registers must be stored, and have it automatically issue pushes/pops? I can live with current design, just wondering. - Volodya

I've another problem. There's one register, gr6, which is used to return high part of return value for functions returning 64-bit values. For such functions, the register should not be saved, naturally. But when function does not return 64-bit value, then the register must be saved. How can I express this in .td file? - Volodya

On Wed, 2004-06-09 at 04:56, Vladimir Prus wrote: > Hello! > Is there an (semi)automatic way to save registers used by a function? For > example, on my target I have to store ar0-ar4 and gr0-gr4, gr5, gr6. For now > I just emit huge prologue code to push them all to stack -- even if they are > not modified at all. > > Is there a way to tell LLVM which registers must be stored, and have it > automatically issue pushes/pops? I can live with current design, just > wondering. I a...

Alkis Evlogimenos wrote: > On Wed, 2004-06-09 at 04:56, Vladimir Prus wrote: > > Hello! > > Is there an (semi)automatic way to save registers used by a function? For > > example, on my target I have to store ar0-ar4 and gr0-gr4, gr5, gr6. For > > now I just emit huge prologue code to push them all to stack -- even if > > they are not modified at all. > > > > Is there a way to tell LLVM which registers must be stored, and have it > > automatically issue pushes/pops? I can live with current design, just...

Vladimir Prus wrote: > I've another problem. There's one register, gr6, which is used to return > high part of return value for functions returning 64-bit values. For such > functions, the register should not be saved, naturally. > > But when function does not return 64-bit value, then the register must be > saved. How can I express this in .td file? O...

On my target, the multiplication can involve all general purpose registers, but there's are still some restrictions: the first and the second operand as well as the result must be in different registers, and neither register can be gr7. How can I enforce this restriction on the register allocator? - Volodya

...group_compat: ldap root at localhost> id john root at localhost> uid=1023(john) gid=10(gr1) groups=10(gr1),5021(gr2),0(gr3), 1013(gr4),3455(gr5) root at localhost> ssh -l john localhost Password: ***** Have a lot of fan... john at localhost> Now add user john into additional group gr6 root at localhost> id john root at localhost> uid=1023(john) gid=10(gr1) groups=10(gr1),5021(gr2),0(gr3), 1013(gr4),3455(gr5),3456(gr6) root at localhost> ssh -l john localhost Password: ***** Password: ***** Password: ***** Permission denied (publickey, keyboard-interactive) root at loca...

...ladimir Prus wrote: > Alkis Evlogimenos wrote: > > On Wed, 2004-06-09 at 04:56, Vladimir Prus wrote: > > > Hello! > > > Is there an (semi)automatic way to save registers used by a function? For > > > example, on my target I have to store ar0-ar4 and gr0-gr4, gr5, gr6. For > > > now I just emit huge prologue code to push them all to stack -- even if > > > they are not modified at all. > > > > > > Is there a way to tell LLVM which registers must be stored, and have it > > > automatically issue pushes/pops? I can live w...

...ead32_native(iovram + i * 4); + } else { + iowrite32_native(dev_priv->saved_vga_font[plane][i], + iovram + i * 4); + } + } +} + void nouveau_hw_save_vga_fonts(struct drm_device *dev, bool save) { - struct drm_nouveau_private *dev_priv = dev->dev_private; uint8_t misc, gr4, gr5, gr6, seq2, seq4; bool graphicsmode; - int i; + unsigned plane; + void __iomem *iovram; if (nv_two_heads(dev)) NVSetOwner(dev, 0); @@ -552,10 +572,19 @@ nouveau_hw_save_vga_fonts(struct drm_device *dev, bool save) graphicsmode = NVReadVgaAttr(dev, 0, NV_CIO_AR_MODE_INDEX) & 1; NVSetEnab...