https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68894
Bug ID: 68894
Summary: Recognition min/max pattern with multiple arguments.
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ysrumyan at gmail dot com
Target Milestone: ---
Analyzing one important benchmark (rgb to cmyk conversion) we found out that
MIN pattern is not recognized for more than 2 arguments. I attached simple
reproducer which exhibit the issue - explicit use of multiple <IM macros leads
to more effective binary for x86. I attached simple test-case for two
sequential MIN but such recognition must be implemented for arbitrary number of
comparisons.
