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2019 Dec 09
2
[PATCH] D70246: [InstCombine] remove identity shuffle simplification for mask with undefs
...t> %t44, <3 x float> undef, <4 x i32> <i32 2, i32 2, i32 2, i32 2> %t78 = fmul <4 x float> %t63, %t76 %t79 = fadd <4 x float> %t75, %t78 %t80 = shufflevector <4 x float> %t50, <4 x float> undef, <4 x i32> <i32 3, i32 3, i32 3, i32 3> %t82 = fmul <4 x float> %t67, %t80 %t83 = fadd <4 x float> %t79, %t82 ret <4 x float> %t83 } Before D70246, opt -instcombine gives this: define <4 x float> @f(i32 %t32, <4 x float>* %t24) { .entry: %t43 = insertelement <3 x i32> undef, i32 %t32, i32 2 %t44 =...
2003 Feb 26
1
non-standard boot floppys
I experimented with floppy sizes. Eg. I used FDFORMAT v1.8 to format a Disk fdformat a: t82 s21 D10 (I even have a modified version of FDFORMAT that creates only 1 FAT to save space, but I'm not using that.) All the information is written nicely to the Boot-Record http://home.freeuk.com/foxy2k/disk/disk3.htm But SYSLINUX seems to ignore the information. While DOS boots fine from...
2017 Feb 28
2
rL296252 Made large integer operation codegen significantly worse.
I see we're missing an isel pattern for add producing carry and doing a memory RMW. I'm going to see if adding that helps anything. ~Craig On Mon, Feb 27, 2017 at 8:47 PM, Nirav Davé via llvm-dev < llvm-dev at lists.llvm.org> wrote: > Yes. I'm seeing that as well. Not clear what's going on. > > In any case it looks to be unrelated to the alias analysis so barring
2017 Oct 13
2
[SelectionDAG] Assertion due to MachineMemOperand flags difference.
...>, Constant:i64<8> t77: i64,ch = load<LD8[FixedStack1+8]> t73, t76, undef:i64 t78: i64,ch = load<LD8[FixedStack1+16]> t73, t27, undef:i64 t80: i64 = add FrameIndex:i64<1>, Constant:i64<24> t81: i64,ch = load<LD8[FixedStack1+24]> t73, t80, undef:i64 t82: i64,ch = load<LD8[FixedStack1+32]> t73, t31, undef:i64 t84: i64 = add FrameIndex:i64<1>, Constant:i64<40> t85: i64,ch = load<LD8[FixedStack1+40]> t73, t84, undef:i64 t86: i64,ch = load<LD8[FixedStack1+48]> t73, t36, undef:i64 t88: i64 = add FrameIndex:i64&...
2005 Dec 21
9
question about changejournal
Hi, I''ve got a newbie question--sorry if this is covered elsewhere, I parsed through the archives for awhile and didn''t see it. I''d like to listen for whenever a file is renamed (e.g. foo.txt -> foo.old) and then magically change it back. This sounds odd, but I''m working with a stubborn application and this will actually make things work nice. So, if I do: