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| author | Kewen Lin <linkw@linux.ibm.com> | 2020-11-11 21:18:23 -0600 |
|---|---|---|
| committer | Kewen Lin <linkw@linux.ibm.com> | 2020-11-11 21:25:08 -0600 |
| commit | d33bc98f5bc65f2505fcaefb0f9055ec67fe36d2 (patch) | |
| tree | cabb44c1fe1334dc44320f46592b72c1a9137f5c /gcc | |
| parent | 8069928d5c2a99973ac16a49d6c25bc4dc886e14 (diff) | |
| download | gcc-d33bc98f5bc65f2505fcaefb0f9055ec67fe36d2.zip gcc-d33bc98f5bc65f2505fcaefb0f9055ec67fe36d2.tar.gz gcc-d33bc98f5bc65f2505fcaefb0f9055ec67fe36d2.tar.bz2 | |
testsuite: Adjust pr96789.c by disabling loop vect
New test gcc.dg/tree-ssa/pr96789.c fails on
arm-none-linux-gnueabihf since loop vectorizer is able to optimize
the two loops which operate on array tmp with load_lanes feature
support, it make dse3 fail to find expected inputs.
As Richard suggested, this patch is to replace option
-ftree-vectorize to -ftree-slp-vectorize -fno-tree-loop-vectorize.
gcc/testsuite/ChangeLog:
* gcc.dg/tree-ssa/pr96789.c: Adjusted by disabling loop
vectorization.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/pr96789.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr96789.c b/gcc/testsuite/gcc.dg/tree-ssa/pr96789.c index d6139a0..5704952 100644 --- a/gcc/testsuite/gcc.dg/tree-ssa/pr96789.c +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr96789.c @@ -1,5 +1,8 @@ /* { dg-do compile } */ -/* { dg-options "-O2 -funroll-loops -ftree-vectorize -fdump-tree-dse-details" } */ +/* Disable loop vectorization to avoid that loop vectorizer + optimizes those two loops that operate tmp array so that + subsequent dse3 won't eliminate expected tmp stores. */ +/* { dg-options "-O2 -funroll-loops -ftree-slp-vectorize -fno-tree-loop-vectorize -fdump-tree-dse-details" } */ /* Test if scalar cleanup pass takes effects, mainly check its secondary pass DSE can remove dead stores on array |