mirror of
https://github.com/RPCS3/llvm.git
synced 2024-12-19 18:10:14 +00:00
8a977e2edd
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94574 91177308-0d34-0410-b5e6-96231b3b80d8
25 lines
867 B
LLVM
25 lines
867 B
LLVM
; RUN: opt < %s -analyze -scalar-evolution \
|
|
; 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
|
|
}
|