1 ; RUN: opt < %s -loop-reduce -S | grep "phi double" | count 1 2 3 define void @foobar(i32 %n) nounwind { 4 entry: 5 icmp eq i32 %n, 0 ; <i1>:0 [#uses=2] 6 br i1 %0, label %return, label %bb.nph 7 8 bb.nph: ; preds = %entry 9 %umax = select i1 %0, i32 1, i32 %n ; <i32> [#uses=1] 10 br label %bb 11 12 bb: ; preds = %bb, %bb.nph 13 %i.03 = phi i32 [ 0, %bb.nph ], [ %indvar.next, %bb ] ; <i32> [#uses=3] 14 tail call void @bar( i32 %i.03 ) nounwind 15 uitofp i32 %i.03 to double ; <double>:1 [#uses=1] 16 tail call void @foo( double %1 ) nounwind 17 %indvar.next = add i32 %i.03, 1 ; <i32> [#uses=2] 18 %exitcond = icmp eq i32 %indvar.next, %umax ; <i1> [#uses=1] 19 br i1 %exitcond, label %return, label %bb 20 21 return: ; preds = %bb, %entry 22 ret void 23 } 24 25 ; Unable to eliminate cast because the mantissa bits for double are not enough 26 ; to hold all of i64 IV bits. 27 define void @foobar2(i64 %n) nounwind { 28 entry: 29 icmp eq i64 %n, 0 ; <i1>:0 [#uses=2] 30 br i1 %0, label %return, label %bb.nph 31 32 bb.nph: ; preds = %entry 33 %umax = select i1 %0, i64 1, i64 %n ; <i64> [#uses=1] 34 br label %bb 35 36 bb: ; preds = %bb, %bb.nph 37 %i.03 = phi i64 [ 0, %bb.nph ], [ %indvar.next, %bb ] ; <i64> [#uses=3] 38 trunc i64 %i.03 to i32 ; <i32>:1 [#uses=1] 39 tail call void @bar( i32 %1 ) nounwind 40 uitofp i64 %i.03 to double ; <double>:2 [#uses=1] 41 tail call void @foo( double %2 ) nounwind 42 %indvar.next = add i64 %i.03, 1 ; <i64> [#uses=2] 43 %exitcond = icmp eq i64 %indvar.next, %umax ; <i1> [#uses=1] 44 br i1 %exitcond, label %return, label %bb 45 46 return: ; preds = %bb, %entry 47 ret void 48 } 49 50 ; Unable to eliminate cast due to potentional overflow. 51 define void @foobar3() nounwind { 52 entry: 53 tail call i32 (...)* @nn( ) nounwind ; <i32>:0 [#uses=1] 54 icmp eq i32 %0, 0 ; <i1>:1 [#uses=1] 55 br i1 %1, label %return, label %bb 56 57 bb: ; preds = %bb, %entry 58 %i.03 = phi i32 [ 0, %entry ], [ %3, %bb ] ; <i32> [#uses=3] 59 tail call void @bar( i32 %i.03 ) nounwind 60 uitofp i32 %i.03 to double ; <double>:2 [#uses=1] 61 tail call void @foo( double %2 ) nounwind 62 add i32 %i.03, 1 ; <i32>:3 [#uses=2] 63 tail call i32 (...)* @nn( ) nounwind ; <i32>:4 [#uses=1] 64 icmp ugt i32 %4, %3 ; <i1>:5 [#uses=1] 65 br i1 %5, label %bb, label %return 66 67 return: ; preds = %bb, %entry 68 ret void 69 } 70 71 ; Unable to eliminate cast due to overflow. 72 define void @foobar4() nounwind { 73 entry: 74 br label %bb.nph 75 76 bb.nph: ; preds = %entry 77 br label %bb 78 79 bb: ; preds = %bb, %bb.nph 80 %i.03 = phi i8 [ 0, %bb.nph ], [ %indvar.next, %bb ] ; <i32> [#uses=3] 81 %tmp2 = sext i8 %i.03 to i32 ; <i32>:0 [#uses=1] 82 tail call void @bar( i32 %tmp2 ) nounwind 83 %tmp3 = uitofp i8 %i.03 to double ; <double>:1 [#uses=1] 84 tail call void @foo( double %tmp3 ) nounwind 85 %indvar.next = add i8 %i.03, 1 ; <i32> [#uses=2] 86 %tmp = sext i8 %indvar.next to i32 87 %exitcond = icmp eq i32 %tmp, 32767 ; <i1> [#uses=1] 88 br i1 %exitcond, label %return, label %bb 89 90 return: ; preds = %bb, %entry 91 ret void 92 } 93 94 declare void @bar(i32) 95 96 declare void @foo(double) 97 98 declare i32 @nn(...) 99 100
