[X86][MemFold] Disable testcases for powerpc64-unknown-linux-gnu

[yubing]

will it work for your issue in ppc64? do we have other buildfail @abhina.sreeskantharajan

[craig.topper]

This doesn't seem like the right way to fix this. The issue is that it's complaining about --ignore-initial not being supported. I don't think checking the target is the right way to check for that. Wy do we need to skip the first 568 lines?

[yubing]

In D146498#4208685, @craig.topper wrote:

This doesn't seem like the right way to fix this. The issue is that it's complaining about --ignore-initial not being supported. I don't think checking the target is the right way to check for that. Wy do we need to skip the first 568 lines?

the first 568 bytes are:

/*===- TableGen'erated file -------------------------------------*- C++ -*-===*\
|*                                                                            *|
|* X86 fold tables                                                            *|
|*                                                                            *|
|* Automatically generated file, do not edit!                                 *|
|*                                                                            *|
\*===----------------------------------------------------------------------===*/

[skan]

Agree with craig. There are also some inc files that do not have comment TableGen'erated file in LLVM. (grep -r -L "TableGen'erated" --include=\*.inc)
I think we can remove emitSourceFileHeader("X86 fold tables", OS); and --ignore-initial=0:568 to fix this issue.

[yubing]

In D146498#4208736, @skan wrote:

Agree with craig. There are also some inc files that do not have comment TableGen'erated file in LLVM. (grep -r -L "TableGen'erated" --include=\*.inc)
I think we can remove emitSourceFileHeader("X86 fold tables", OS); and --ignore-initial=0:568 to fix this issue.

sounds reasonable

llvm/test/TableGen/x86-auto-memfold.td

 // RUN: llvm-tblgen -gen-x86-fold-tables -asmwriternum=1 %p/../../lib/Target/X86/X86.td -I %p/../../include -I %p/../../lib/Target/X86/ -I %p/../../include/ -I %p/../../lib/Target/ --write-if-changed  -o %t1
 // RUN: cmp  --ignore-initial=0:568 %p/../../lib/Target/X86/X86MemFoldTables.inc %t1
+// XFAIL: target=powerpc64-unknown-linux-gnu{{.*}}