llvm-6502/test/Analysis/ScalarEvolution/trip-count4.ll
Dan Gohman b1e1e82c54 Change these tests to feed the assembly files to opt directly, instead
of using llvm-as, now that opt supports this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81226 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-08 16:50:01 +00:00

25 lines
881 B
LLVM

; RUN: opt %s -analyze -scalar-evolution -disable-output \
; RUN: | grep {sext.*trunc.*Exits: 11}
; ScalarEvolution should be able to compute a loop exit value for %indvar.i8.
define void @another_count_down_signed(double* %d, i64 %n) nounwind {
entry:
br label %loop
loop: ; preds = %loop, %entry
%indvar = phi i64 [ %n, %entry ], [ %indvar.next, %loop ] ; <i64> [#uses=4]
%s0 = shl i64 %indvar, 8 ; <i64> [#uses=1]
%indvar.i8 = ashr i64 %s0, 8 ; <i64> [#uses=1]
%t0 = getelementptr double* %d, i64 %indvar.i8 ; <double*> [#uses=2]
%t1 = load double* %t0 ; <double> [#uses=1]
%t2 = fmul double %t1, 1.000000e-01 ; <double> [#uses=1]
store double %t2, double* %t0
%indvar.next = sub i64 %indvar, 1 ; <i64> [#uses=2]
%exitcond = icmp eq i64 %indvar.next, 10 ; <i1> [#uses=1]
br i1 %exitcond, label %return, label %loop
return: ; preds = %loop
ret void
}