1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -passes=indvars -S | FileCheck %s 3 4; Indvars should be able to compute the exit value of this loop 5; without any additional arithmetic. The only add needed should 6; be the canonical IV increment. 7 8target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128" 9 10define void @foo(ptr %p, i32 %n) nounwind { 11; CHECK-LABEL: @foo( 12; CHECK-NEXT: entry: 13; CHECK-NEXT: [[TMP0:%.*]] = icmp sgt i32 [[N:%.*]], 0 14; CHECK-NEXT: br i1 [[TMP0]], label [[BB_NPH:%.*]], label [[RETURN:%.*]] 15; CHECK: bb.nph: 16; CHECK-NEXT: br label [[BB2:%.*]] 17; CHECK: bb2: 18; CHECK-NEXT: [[I_01:%.*]] = phi i32 [ [[TMP7:%.*]], [[BB3:%.*]] ], [ 0, [[BB_NPH]] ] 19; CHECK-NEXT: [[TMP1:%.*]] = sext i32 [[I_01]] to i64 20; CHECK-NEXT: [[TMP2:%.*]] = getelementptr double, ptr [[P:%.*]], i64 [[TMP1]] 21; CHECK-NEXT: [[TMP3:%.*]] = load double, ptr [[TMP2]], align 8 22; CHECK-NEXT: [[TMP4:%.*]] = fmul double [[TMP3]], 1.100000e+00 23; CHECK-NEXT: [[TMP5:%.*]] = sext i32 [[I_01]] to i64 24; CHECK-NEXT: [[TMP6:%.*]] = getelementptr double, ptr [[P]], i64 [[TMP5]] 25; CHECK-NEXT: store double [[TMP4]], ptr [[TMP6]], align 8 26; CHECK-NEXT: [[TMP7]] = add nuw nsw i32 [[I_01]], 1 27; CHECK-NEXT: br label [[BB3]] 28; CHECK: bb3: 29; CHECK-NEXT: [[TMP8:%.*]] = icmp slt i32 [[TMP7]], [[N]] 30; CHECK-NEXT: br i1 [[TMP8]], label [[BB2]], label [[BB3_RETURN_CRIT_EDGE:%.*]] 31; CHECK: bb3.return_crit_edge: 32; CHECK-NEXT: br label [[RETURN]] 33; CHECK: return: 34; CHECK-NEXT: ret void 35; 36 37entry: 38 %0 = icmp sgt i32 %n, 0 39 br i1 %0, label %bb.nph, label %return 40 41bb.nph: ; preds = %entry 42 br label %bb2 43 44bb2: ; preds = %bb3, %bb.nph 45 %i.01 = phi i32 [ %7, %bb3 ], [ 0, %bb.nph ] 46 %1 = sext i32 %i.01 to i64 47 %2 = getelementptr double, ptr %p, i64 %1 48 %3 = load double, ptr %2, align 8 49 %4 = fmul double %3, 1.100000e+00 50 %5 = sext i32 %i.01 to i64 51 %6 = getelementptr double, ptr %p, i64 %5 52 store double %4, ptr %6, align 8 53 %7 = add i32 %i.01, 1 54 br label %bb3 55 56bb3: ; preds = %bb2 57 %8 = icmp slt i32 %7, %n 58 br i1 %8, label %bb2, label %bb3.return_crit_edge 59 60bb3.return_crit_edge: ; preds = %bb3 61 br label %return 62 63return: ; preds = %bb3.return_crit_edge, %entry 64 ret void 65} 66