mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-25 14:32:53 +00:00
6c3a21a368
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10334 91177308-0d34-0410-b5e6-96231b3b80d8
23 lines
635 B
LLVM
23 lines
635 B
LLVM
; This is a more aggressive form of accumulator recursion insertion, which
|
|
; requires noticing that X doesn't change as we perform the tailcall. Thanks
|
|
; go out to the anonymous users of the demo script for "suggesting"
|
|
; optimizations that should be done. :)
|
|
|
|
; RUN: llvm-as < %s | opt -tailcallelim | llvm-dis | not grep call
|
|
|
|
int %mul(int %x, int %y) {
|
|
entry:
|
|
%tmp.1 = seteq int %y, 0
|
|
br bool %tmp.1, label %return, label %endif
|
|
|
|
endif:
|
|
%tmp.8 = add int %y, -1
|
|
%tmp.5 = call int %mul( int %x, int %tmp.8 )
|
|
%tmp.9 = add int %tmp.5, %x
|
|
ret int %tmp.9
|
|
|
|
return:
|
|
ret int %x
|
|
}
|
|
|