llvm-project/llvm/test/CodeGen/X86/loop-strength-reduce.ll

30 lines
890 B
LLVM

; RUN: llvm-upgrade < %s | llvm-as | llc -march=x86 | \
; RUN: grep {A(} | wc -l | grep 1
;
; Make sure the common loop invariant _A(reg) is hoisted up to preheader.
%A = internal global [16 x [16 x int]] zeroinitializer, align 32
void %test(int %row, int %N.in) {
entry:
%N = cast int %N.in to uint
%tmp5 = setgt int %N.in, 0
br bool %tmp5, label %cond_true, label %return
cond_true:
%indvar = phi uint [ 0, %entry ], [ %indvar.next, %cond_true ]
%i.0.0 = cast uint %indvar to int
%tmp2 = add int %i.0.0, 1
%tmp = getelementptr [16 x [16 x int]]* %A, int 0, int %row, int %tmp2
store int 4, int* %tmp
%tmp5 = add int %i.0.0, 2
%tmp7 = getelementptr [16 x [16 x int]]* %A, int 0, int %row, int %tmp5
store int 5, int* %tmp7
%indvar.next = add uint %indvar, 1
%exitcond = seteq uint %indvar.next, %N
br bool %exitcond, label %return, label %cond_true
return:
ret void
}