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Kaylor, Andrew via llvm-dev

2016-Apr-06 21:34 UTC

[llvm-dev] Calling a script from a script in a lit test

I'm trying to put together some tests for the optimization bisecting feature
I'm working on and I've come across a stumbling block trying to
accomplish something in a lit test.

I've got an IR file with some simple functions, one of which includes a call
to another function that will be inlined during optimization.  I can use this to
manually test my new OptBisect class by invoking the existing utils/bisect file
in the following way:

    python <llvm_scr_root>/utils/bisect --start=0 --end=200 test.sh
%(count)s

with 'test.sh' looking like this:

    opt -O2 -opt-bisect-limit=%1 -S opt-bisect.ll | FileCheck opt-bisect.ll
--check-prefix=CHECK-BISECT-INLINE

and 'opt-bisect.ll' looking (more or less) like this:

    ; CHECK-BISECT-INLINE: call i32 @f1()
    define i32 @f1() {
    entry:
      ret i32 0
    }

    define i32 @f2() {
    entry:
      %temp = call i32 @f1()
      ret i32 %temp
    }
>From a command shell that does exactly what I want it to and converges on
the inlining optimization.  So my question is, how can I accomplish that same
thing in the form of a lit test.  I feel like it's really close, but I
don't know (1) how to find utils/bisect properly from the lit test, and (2)
how to get the piping at the right level on the run line (or into a secondary
script that will work on all platforms.
Can anyone help me out?

Thanks,
Andy
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Reid Kleckner via llvm-dev

2016-Apr-06 23:40 UTC

head link

[llvm-dev] Calling a script from a script in a lit test

Well... last time I wanted to essentially have two files in one in a lit
test, I used grep and sed to split one file, like the following:

; RUN: grep BISECT %s | sed -e 's/^.*BISECT: //' > %t.sh
; RUN: python .../bisect ... %t.sh
; BISECT: opt -O2 ...
define void @foo() { ret void }

This approach isn't going to work on Windows, though, because bash isn't
provided by gnuwin32, and so far we've avoided depending on it directly.

On Wed, Apr 6, 2016 at 2:34 PM, Kaylor, Andrew via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> I’m trying to put together some tests for the optimization bisecting
> feature I’m working on and I’ve come across a stumbling block trying to
> accomplish something in a lit test.
>
>
>
> I’ve got an IR file with some simple functions, one of which includes a
> call to another function that will be inlined during optimization.  I can
> use this to manually test my new OptBisect class by invoking the existing
> utils/bisect file in the following way:
>
>
>
>     python <llvm_scr_root>/utils/bisect --start=0 --end=200 test.sh
> %(count)s
>
>
>
> with ‘test.sh’ looking like this:
>
>
>
>     opt -O2 -opt-bisect-limit=%1 -S opt-bisect.ll | FileCheck
> opt-bisect.ll --check-prefix=CHECK-BISECT-INLINE
>
>
>
> and ‘opt-bisect.ll’ looking (more or less) like this:
>
>
>
>     ; CHECK-BISECT-INLINE: call i32 @f1()
>
>     define i32 @f1() {
>
>     entry:
>
>       ret i32 0
>
>     }
>
>
>
>     define i32 @f2() {
>
>     entry:
>
>       %temp = call i32 @f1()
>
>       ret i32 %temp
>
>     }
>
>
>
> From a command shell that does exactly what I want it to and converges on
> the inlining optimization.  So my question is, how can I accomplish that
> same thing in the form of a lit test.  I feel like it’s really close, but I
> don’t know (1) how to find utils/bisect properly from the lit test, and (2)
> how to get the piping at the right level on the run line (or into a
> secondary script that will work on all platforms.
>
>
>
> Can anyone help me out?
>
>
>
> Thanks,
>
> Andy
>
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
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Kaylor, Andrew via llvm-dev

2016-Apr-07 00:40 UTC

head link

[llvm-dev] Calling a script from a script in a lit test

I’ve come up with something that appears to be working for me on Windows using a
python script to do the intermediate piping, but I have serious reservations
about trusting python’s subprocess for cross-platform portability.  Have they
fixed that yet?

From: Reid Kleckner [mailto:rnk at google.com]
Sent: Wednesday, April 06, 2016 4:40 PM
To: Kaylor, Andrew <andrew.kaylor at intel.com>
Cc: llvm-dev at lists.llvm.org
Subject: Re: [llvm-dev] Calling a script from a script in a lit test

Well... last time I wanted to essentially have two files in one in a lit test, I
used grep and sed to split one file, like the following:

; RUN: grep BISECT %s | sed -e 's/^.*BISECT: //' > %t.sh
; RUN: python .../bisect ... %t.sh
; BISECT: opt -O2 ...
define void @foo() { ret void }

This approach isn't going to work on Windows, though, because bash isn't
provided by gnuwin32, and so far we've avoided depending on it directly.

On Wed, Apr 6, 2016 at 2:34 PM, Kaylor, Andrew via llvm-dev <llvm-dev at
lists.llvm.org<mailto:llvm-dev at lists.llvm.org>> wrote:
I’m trying to put together some tests for the optimization bisecting feature I’m
working on and I’ve come across a stumbling block trying to accomplish something
in a lit test.

I’ve got an IR file with some simple functions, one of which includes a call to
another function that will be inlined during optimization.  I can use this to
manually test my new OptBisect class by invoking the existing utils/bisect file
in the following way:

    python <llvm_scr_root>/utils/bisect --start=0 --end=200 test.sh
%(count)s

with ‘test.sh’ looking like this:

    opt -O2 -opt-bisect-limit=%1 -S opt-bisect.ll | FileCheck opt-bisect.ll
--check-prefix=CHECK-BISECT-INLINE

and ‘opt-bisect.ll’ looking (more or less) like this:

    ; CHECK-BISECT-INLINE: call i32 @f1()
    define i32 @f1() {
    entry:
      ret i32 0
    }

    define i32 @f2() {
    entry:
      %temp = call i32 @f1()
      ret i32 %temp
    }

From a command shell that does exactly what I want it to and converges on the
inlining optimization.  So my question is, how can I accomplish that same thing
in the form of a lit test.  I feel like it’s really close, but I don’t know (1)
how to find utils/bisect properly from the lit test, and (2) how to get the
piping at the right level on the run line (or into a secondary script that will
work on all platforms.

Can anyone help me out?

Thanks,
Andy

_______________________________________________
LLVM Developers mailing list
llvm-dev at lists.llvm.org<mailto:llvm-dev at lists.llvm.org>
http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev

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Sean Silva via llvm-dev

2016-Apr-07 01:06 UTC

head link

[llvm-dev] Calling a script from a script in a lit test

On Wed, Apr 6, 2016 at 2:34 PM, Kaylor, Andrew via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> I’m trying to put together some tests for the optimization bisecting
> feature I’m working on and I’ve come across a stumbling block trying to
> accomplish something in a lit test.
>
>
>
> I’ve got an IR file with some simple functions, one of which includes a
> call to another function that will be inlined during optimization.  I can
> use this to manually test my new OptBisect class by invoking the existing
> utils/bisect file in the following way:
>
>
>
>     python <llvm_scr_root>/utils/bisect --start=0 --end=200 test.sh
> %(count)s
>
>
>
> with ‘test.sh’ looking like this:
>
>
>
>     opt -O2 -opt-bisect-limit=%1 -S opt-bisect.ll | FileCheck
> opt-bisect.ll --check-prefix=CHECK-BISECT-INLINE
>
>
>
> and ‘opt-bisect.ll’ looking (more or less) like this:
>
>
>
>     ; CHECK-BISECT-INLINE: call i32 @f1()
>
>     define i32 @f1() {
>
>     entry:
>
>       ret i32 0
>
>     }
>
>
>
>     define i32 @f2() {
>
>     entry:
>
>       %temp = call i32 @f1()
>
>       ret i32 %temp
>
>     }
>
>
>
> From a command shell that does exactly what I want it to and converges on
> the inlining optimization.  So my question is, how can I accomplish that
> same thing in the form of a lit test.  I feel like it’s really close, but I
> don’t know (1) how to find utils/bisect properly from the lit test,
>
You can probably add a lit substitution %llvm_src_root if we don't have one.
(The generated files build_dir/bin/llvm-lit.py (or build_dir/bin/llvm-lit)
already know it, so that information should be available to lit I think)

> and (2) how to get the piping at the right level on the run line (or into
> a secondary script that will work on all platforms.
>
You can always just put files in %S/Inputs/

-- Sean Silva

>
>
> Can anyone help me out?
>
>
>
> Thanks,
>
> Andy
>
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
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