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7 Commits

Author SHA1 Message Date
Sanjay Patel
682732f0ca use update_llc_test_checks.py to tighten checking 
remove redundant and unnecessary test parameters

llvm-svn: 234022
 2015-04-03 17:02:48 +00:00
Sanjay Patel
e16f423a6a [X86, AVX] fix zero-extending integer operand load patterns to use integer instructions 
This is a follow-on to r233704 and another partial fix for PR22685:
https://llvm.org/bugs/show_bug.cgi?id=22685

llvm-svn: 233724
 2015-03-31 18:43:43 +00:00
Sanjay Patel
c33fdfa218 [X86, AVX] try to lowerVectorShuffleAsElementInsertion() for all 256-bit vector sub-types 
I suggested this change in D7898 (http://llvm.org/viewvc/llvm-project?view=revision&revision=231354)

It improves the v4i64 case although not optimally. This AVX codegen:

  vmovq {{.*#+}} xmm0 = mem[0],zero
  vxorpd %ymm1, %ymm1, %ymm1
  vblendpd {{.*#+}} ymm0 = ymm0[0],ymm1[1,2,3]

Becomes:

  vmovsd {{.*#+}} xmm0 = mem[0],zero

Unfortunately, this doesn't completely solve PR22685. There are still at least 2 problems under here:

    We're not handling v32i8 / v16i16.
    We're not getting the FP / int domains right for instruction selection.

But since this patch alone appears to do no harm, reduces code duplication, and helps v4i64, 
I'm submitting this patch ahead of fixing the above.

Differential Revision: http://reviews.llvm.org/D8341

llvm-svn: 233704
 2015-03-31 16:32:11 +00:00
Craig Topper
558157f7a7 [X86] Use vmovss to handle inserting an element into index 0 of a v8f32 vector of zeros. 
llvm-svn: 231354
 2015-03-05 06:38:42 +00:00
Stephen Lin
798e242090 Update to more CodeGen tests to use CHECK-LABEL for labels corresponding to function definitions for more informative error messages. No functionality change. 
All changes were made by the following bash script:

  find test/CodeGen -name "*.ll" | \
  while read NAME; do
    echo "$NAME"
    grep -q "^; *RUN: *llc.*debug" $NAME && continue
    grep -q "^; *RUN:.*llvm-objdump" $NAME && continue
    grep -q "^; *RUN: *opt.*" $NAME && continue
    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/;\([A-Za-z0-9_-]*\)\([A-Za-z0-9_-]*\):\( *\)$FUNC[:]* *\$/;\1\2-LABEL:\3$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
  done

This script catches a superset of the cases caught by the script associated with commit r186280. It initially found some false positives due to unusual constructs in a minority of tests; all such cases were disambiguated first in commit r186621.

llvm-svn: 186624
 2013-07-18 22:47:09 +00:00
Nadav Rotem
01bf090299 Fix a bug in the lowering of BUILD_VECTOR for AVX. SCALAR_TO_VECTOR does not zero untouched elements. Use INSERT_VECTOR_ELT instead. 
llvm-svn: 147948
 2012-01-11 14:07:51 +00:00
Nadav Rotem
969b8a6903 Fix a bug in the legalization of shuffle vectors. When we emulate shuffles using BUILD_VECTORS we may be using a BV of different type. Make sure to cast it back. 
llvm-svn: 147851
 2012-01-10 14:28:46 +00:00