| 6824f127f90197b26af93cf5d6c13b7941567e54 |
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31-Jul-2013 |
Richard Sandiford <rsandifo@linux.vnet.ibm.com> |
[SystemZ] Be more careful about inverting CC masks
System z branches have a mask to select which of the 4 CC values should
cause the branch to be taken. We can invert a branch by inverting the mask.
However, not all instructions can produce all 4 CC values, so inverting
the branch like this can lead to some oddities. For example, integer
comparisons only produce a CC of 0 (equal), 1 (less) or 2 (greater).
If an integer EQ is reversed to NE before instruction selection,
the branch will test for 1 or 2. If instead the branch is reversed
after instruction selection (by inverting the mask), it will test for
1, 2 or 3. Both are correct, but the second isn't really canonical.
This patch therefore keeps track of which CC values are possible
and uses this when inverting a mask.
Although this is mostly cosmestic, it fixes undefined behavior
for the CIJNLH in branch-08.ll. Another fix would have been
to mask out bit 0 when generating the fused compare and branch,
but the point of this patch is that we shouldn't need to do that
in the first place.
The patch also makes it easier to reuse CC results from other instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187495 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/test/CodeGen/SystemZ/atomicrmw-xor-04.ll
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| 52b2774577e07fbf804e4d647119578df4111f21 |
|
19-Jul-2013 |
Richard Sandiford <rsandifo@linux.vnet.ibm.com> |
[SystemZ] Add NGRK, OGRK and XGRK
Like r186683, but for 64 bits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186685 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/test/CodeGen/SystemZ/atomicrmw-xor-04.ll
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| 8b2b8a18354546d534b72f912153a3252ab4b857 |
|
14-Jul-2013 |
Stephen Lin <stephenwlin@gmail.com> |
Mass update to CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change and all updated tests passed locally.
This update was done with the following bash script:
find test/CodeGen -name "*.ll" | \
while read NAME; do
echo "$NAME"
if ! grep -q "^; *RUN: *llc.*debug" $NAME; then
TEMP=`mktemp -t temp`
cp $NAME $TEMP
sed -n "s/^define [^@]*@\([A-Za-z0-9_]*\)(.*$/\1/p" < $NAME | \
while read FUNC; do
sed -i '' "s/;\(.*\)\([A-Za-z0-9_-]*\):\( *\)$FUNC: *\$/;\1\2-LABEL:\3$FUNC:/g" $TEMP
done
sed -i '' "s/;\(.*\)-LABEL-LABEL:/;\1-LABEL:/" $TEMP
sed -i '' "s/;\(.*\)-NEXT-LABEL:/;\1-NEXT:/" $TEMP
sed -i '' "s/;\(.*\)-NOT-LABEL:/;\1-NOT:/" $TEMP
sed -i '' "s/;\(.*\)-DAG-LABEL:/;\1-DAG:/" $TEMP
mv $TEMP $NAME
fi
done
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186280 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/test/CodeGen/SystemZ/atomicrmw-xor-04.ll
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| af2a1bebfcef3e3767ef3875957c986e087dd0e8 |
|
21-May-2013 |
Richard Sandiford <rsandifo@linux.vnet.ibm.com> |
[SystemZ] Tighten branch tests
After r182274, the branches in these tests must always be short.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182358 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/test/CodeGen/SystemZ/atomicrmw-xor-04.ll
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| b503b49b5105b6aad7d2a015468b84b0f64dfe8e |
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06-May-2013 |
Ulrich Weigand <ulrich.weigand@de.ibm.com> |
[SystemZ] Add CodeGen test cases
This adds all CodeGen tests for the SystemZ target.
This version of the patch incorporates feedback from a review by
Sean Silva. Thanks to all reviewers!
Patch by Richard Sandiford.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181204 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/test/CodeGen/SystemZ/atomicrmw-xor-04.ll
|