https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78057
Bug ID: 78057
Summary: [7 Regression]: FAIL: gcc.target/i386/bmi-{4,5,6}.c
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: ubizjak at gmail dot com
Target Milestone: ---
As explained in [1], r241381 caused:
FAIL: gcc.target/i386/bmi-4.c (test for excess errors)
FAIL: gcc.target/i386/bmi-5.c (test for excess errors)
FAIL: gcc.target/i386/bmi-6.c (test for excess errors)
due to missing constant-fold functionality for newly introduced builtins in
ix86_fold_builtin function. Constant operands should be folded like
__builtin_clz or __builtin_ctz, with zero input operand folded to the bitsize
of the generated instruction.
[1] https://gcc.gnu.org/ml/gcc-patches/2016-10/msg01680.html
