mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-04 22:07:27 +00:00
37bf92b523
if both A op B and A op C simplify. This fires fairly often but doesn't make that much difference. On gcc-as-one-file it removes two "and"s and turns one branch into a select. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122399 91177308-0d34-0410-b5e6-96231b3b80d8
24 lines
486 B
LLVM
24 lines
486 B
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
define i32 @foo(i32 %x, i32 %y) {
|
|
; CHECK: @foo
|
|
%add = add nsw i32 %y, %x
|
|
%mul = mul nsw i32 %add, %y
|
|
%square = mul nsw i32 %y, %y
|
|
%res = sub i32 %mul, %square
|
|
ret i32 %res
|
|
; CHECK-NEXT: mul i32 %x, %y
|
|
; CHECK-NEXT: ret i32
|
|
}
|
|
|
|
define i1 @bar(i64 %x, i64 %y) {
|
|
; CHECK: @bar
|
|
%a = and i64 %y, %x
|
|
; CHECK: and
|
|
; CHECK-NOT: and
|
|
%not = xor i64 %a, -1
|
|
%b = and i64 %y, %not
|
|
%r = icmp eq i64 %b, 0
|
|
ret i1 %r
|
|
; CHECK: ret i1
|
|
}
|