In r267672, where the loop distribution pragma was introduced, I tried
it hard to keep the old behavior for opt: when opt is invoked
with -loop-distribute, it should distribute the loop (it's off by
default when ran via the optimization pipeline).
As MichaelZ has discovered this has the unintended consequence of
breaking a very common developer work-flow to reproduce compilations
using opt: First you print the pass pipeline of clang
with -debug-pass=Arguments and then invoking opt with the returned
arguments.
clang -debug-pass will include -loop-distribute but the pass is invoked
with default=off so nothing happens unless the loop carries the pragma.
While through opt (default=on) we will try to distribute all loops.
This changes opt's default to off as well to match clang. The tests are
modified to explicitly enable the transformation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@290235 91177308-0d34-0410-b5e6-96231b3b80d8
We were inappropriately using 32-bit types to account for quantities
that can be far larger.
Fixed in PR28443.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@274737 91177308-0d34-0410-b5e6-96231b3b80d8
