mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-18 12:29:21 +00:00
19 lines
550 B
LLVM
19 lines
550 B
LLVM
|
; If the result of an instruction is only used outside of the loop, sink
|
||
|
; the instruction to the exit blocks instead of executing it on every
|
||
|
; iteration of the loop.
|
||
|
;
|
||
|
; RUN: llvm-as < %s | opt -licm | llvm-dis | grep -C1 mul | grep Out:
|
||
|
|
||
|
int %test(int %N) {
|
||
|
Entry:
|
||
|
br label %Loop
|
||
|
Loop:
|
||
|
%N_addr.0.pn = phi int [ %dec, %Loop ], [ %N, %Entry ]
|
||
|
%tmp.6 = mul int %N, %N_addr.0.pn
|
||
|
%dec = add int %N_addr.0.pn, -1
|
||
|
%tmp.1 = setne int %N_addr.0.pn, 1
|
||
|
br bool %tmp.1, label %Loop, label %Out
|
||
|
Out:
|
||
|
ret int %tmp.6
|
||
|
}
|