mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-10-15 20:26:36 +00:00
22 lines
568 B
LLVM
22 lines
568 B
LLVM
|
; Don't reduce the byte access to P[i], at least not on targets that
|
||
|
|
; support an efficient 'mem[r1+r2]' addressing mode.
|
||
|
|
|
||
|
|
; RUN: llvm-as < %s | opt -loop-reduce | llvm-dis | grep 'getelementptr.*PTR.*INDVAR'
|
||
|
|
|
||
|
|
declare bool %pred(int)
|
||
|
|
|
||
|
|
void %test(sbyte* %PTR) {
|
||
|
|
br label %Loop
|
||
|
|
Loop:
|
||
|
|
%INDVAR = phi int [0, %0], [%INDVAR2, %Loop]
|
||
|
|
|
||
|
|
%STRRED = getelementptr sbyte* %PTR, int %INDVAR
|
||
|
|
store sbyte 0, sbyte* %STRRED
|
||
|
|
|
||
|
|
%INDVAR2 = add int %INDVAR, 1
|
||
|
|
%cond = call bool %pred(int %INDVAR2) ;; cannot eliminate indvar
|
||
|
|
br bool %cond, label %Loop, label %Out
|
||
|
|
Out:
|
||
|
|
ret void
|
||
|
|
}
|