https://bugs.llvm.org/show_bug.cgi?id=37987
Bug ID: 37987
Summary: [X86] Improve optimization of X86ISD + FLAGS opcodes
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: X86
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected],
[email protected]
https://reviews.llvm.org/D48619 highlighted that we're not doing much to
optimize the ops once they are lowered to X86ISD + FLAGS opcodes:
// Arithmetic operations with FLAGS results.
ADD, SUB, ADC, SBB, SMUL,
INC, DEC, OR, XOR, AND,
We should at least manage basic constant folding, zero handling etc.
--
You are receiving this mail because:
You are on the CC list for the bug._______________________________________________
llvm-bugs mailing list
[email protected]
http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
