| ; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s |
| ; PR3275 |
| |
| ; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'func_15' |
| ; CHECK-NOT: /u -1 |
| |
| @g_16 = external global i16 ; <i16*> [#uses=3] |
| @.str = external constant [4 x i8] ; <[4 x i8]*> [#uses=0] |
| |
| define void @func_15() nounwind { |
| entry: |
| %0 = load i16, i16* @g_16, align 2 ; <i16> [#uses=1] |
| %1 = icmp sgt i16 %0, 0 ; <i1> [#uses=1] |
| br i1 %1, label %bb2, label %bb.nph |
| |
| bb.nph: ; preds = %entry |
| %g_16.promoted = load i16, i16* @g_16 ; <i16> [#uses=1] |
| br label %bb |
| |
| bb: ; preds = %bb1, %bb.nph |
| %g_16.tmp.0 = phi i16 [ %g_16.promoted, %bb.nph ], [ %2, %bb1 ] ; <i16> [#uses=1] |
| %2 = add i16 %g_16.tmp.0, -1 ; <i16> [#uses=3] |
| br label %bb1 |
| |
| bb1: ; preds = %bb |
| %3 = icmp sgt i16 %2, 0 ; <i1> [#uses=1] |
| br i1 %3, label %bb1.bb2_crit_edge, label %bb |
| |
| bb1.bb2_crit_edge: ; preds = %bb1 |
| store i16 %2, i16* @g_16 |
| br label %bb2 |
| |
| bb2: ; preds = %bb1.bb2_crit_edge, %entry |
| br label %return |
| |
| return: ; preds = %bb2 |
| ret void |
| } |
| |
| declare i32 @main() nounwind |
| |
| declare i32 @printf(i8*, ...) nounwind |
| |
