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More ReadMe tweaks: fix my paths, use real files #947

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merged 3 commits into from
Oct 17, 2023
Merged

More ReadMe tweaks: fix my paths, use real files #947

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c6f07c5
Remove one more hard-coded “llvm”
FlashSheridan Oct 16, 2023
dd6fa1a
Remove yet another more hard-coded “llvm”
FlashSheridan Oct 16, 2023
22c6463
Tweak the Clang Plugin example commands:
FlashSheridan Oct 16, 2023
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11 changes: 6 additions & 5 deletions README.md
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Expand Up @@ -100,7 +100,7 @@ pass.

Translation validation of a single LLVM unit test, using lit:
```
$LLVM2_BUILD/bin/llvm-lit -vv -Dopt=$ALIVE2_HOME/alive2/build/opt-alive.sh $LLVM2_HOME/llvm/llvm/test/Transforms/InstCombine/canonicalize-constant-low-bit-mask-and-icmp-sge-to-icmp-sle.ll
$LLVM2_BUILD/bin/llvm-lit -vv -Dopt=$ALIVE2_HOME/alive2/build/opt-alive.sh $LLVM2_HOME/llvm/test/Transforms/InstCombine/canonicalize-constant-low-bit-mask-and-icmp-sge-to-icmp-sle.ll
```

The output should be:
Expand All @@ -115,7 +115,7 @@ To run translation validation on all the LLVM unit tests for IR-level
transformations:

```
$LLVM2_BUILD/bin/llvm-lit -vv -Dopt=$ALIVE2_HOME/alive2/build/opt-alive.sh $LLVM2_HOME/llvm/llvm/test/Transforms
$LLVM2_BUILD/bin/llvm-lit -vv -Dopt=$ALIVE2_HOME/alive2/build/opt-alive.sh $LLVM2_HOME/llvm/test/Transforms
```

We run this command on the main LLVM branch each day, and keep track of the results
Expand All @@ -129,16 +129,17 @@ This plugin tries to validate every IR-level transformation performed
by LLVM. Invoke the plugin like this:

```
$ clang -O3 <src.c> -S -emit-llvm \
clang -O3 $LLVM2_HOME/clang/test/C/C99/n505.c -S -emit-llvm \
-fpass-plugin=$ALIVE2_HOME/alive2/build/tv/tv.so \
-Xclang -load -Xclang $ALIVE2_HOME/alive2/build/tv/tv.so
```

Or, more conveniently:

```
$ $ALIVE2_HOME/alive2/build/alivecc -O3 -c <src.c>
$ $ALIVE2_HOME/alive2/build/alive++ -O3 -c <src.cpp>
$ALIVE2_HOME/alive2/build/alivecc -O3 -c $LLVM2_HOME/clang/test/C/C99/n505.c

$ALIVE2_HOME/alive2/build/alive++ -O3 -c $LLVM2_HOME/clang/test/Analysis/aggrinit-cfg-output.cpp
```

The Clang plugin can optionally use multiple cores. To enable parallel
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