1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -passes=indvars -S | FileCheck %s 3 4target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 5 6define void @test_int(i32 %start, ptr %p) { 7; CHECK-LABEL: @test_int( 8; CHECK-NEXT: entry: 9; CHECK-NEXT: [[TMP0:%.*]] = trunc i32 [[START:%.*]] to i3 10; CHECK-NEXT: [[TMP1:%.*]] = sub i3 0, [[TMP0]] 11; CHECK-NEXT: br label [[LOOP:%.*]] 12; CHECK: loop: 13; CHECK-NEXT: [[I2:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[I2_INC:%.*]], [[LOOP]] ] 14; CHECK-NEXT: [[I2_INC]] = add nuw nsw i32 [[I2]], 1 15; CHECK-NEXT: store volatile i32 [[I2_INC]], ptr [[P:%.*]], align 4 16; CHECK-NEXT: [[LFTR_WIDEIV:%.*]] = trunc i32 [[I2_INC]] to i3 17; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i3 [[LFTR_WIDEIV]], [[TMP1]] 18; CHECK-NEXT: br i1 [[EXITCOND]], label [[END:%.*]], label [[LOOP]] 19; CHECK: end: 20; CHECK-NEXT: ret void 21; 22entry: 23 br label %loop 24 25loop: 26 %i = phi i32 [ %start, %entry ], [ %i.inc, %loop ] 27 %i2 = phi i32 [ 0, %entry ], [ %i2.inc, %loop ] 28 %i.inc = add nuw i32 %i, 1 29 %i2.inc = add nuw i32 %i2, 1 30 store volatile i32 %i2.inc, ptr %p 31 %and = and i32 %i.inc, 7 32 %cmp = icmp eq i32 %and, 0 33 br i1 %cmp, label %end, label %loop 34 35end: 36 ret void 37} 38 39@data = global [256 x i8] zeroinitializer 40 41define void @test_ptr(i32 %start) { 42; CHECK-LABEL: @test_ptr( 43; CHECK-NEXT: entry: 44; CHECK-NEXT: [[TMP0:%.*]] = trunc i32 [[START:%.*]] to i3 45; CHECK-NEXT: [[TMP1:%.*]] = sub i3 -1, [[TMP0]] 46; CHECK-NEXT: [[TMP2:%.*]] = zext i3 [[TMP1]] to i64 47; CHECK-NEXT: [[TMP3:%.*]] = add nuw nsw i64 [[TMP2]], 1 48; CHECK-NEXT: [[UGLYGEP:%.*]] = getelementptr i8, ptr @data, i64 [[TMP3]] 49; CHECK-NEXT: br label [[LOOP:%.*]] 50; CHECK: loop: 51; CHECK-NEXT: [[P:%.*]] = phi ptr [ @data, [[ENTRY:%.*]] ], [ [[P_INC:%.*]], [[LOOP]] ] 52; CHECK-NEXT: [[P_INC]] = getelementptr inbounds i8, ptr [[P]], i64 1 53; CHECK-NEXT: store volatile i8 0, ptr [[P_INC]], align 1 54; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq ptr [[P_INC]], [[UGLYGEP]] 55; CHECK-NEXT: br i1 [[EXITCOND]], label [[END:%.*]], label [[LOOP]] 56; CHECK: end: 57; CHECK-NEXT: ret void 58; 59entry: 60 br label %loop 61 62loop: 63 %i = phi i32 [ %start, %entry ], [ %i.inc, %loop ] 64 %p = phi ptr [ @data, %entry ], [ %p.inc, %loop ] 65 %i.inc = add nuw i32 %i, 1 66 %p.inc = getelementptr inbounds i8, ptr %p, i64 1 67 store volatile i8 0, ptr %p.inc 68 %and = and i32 %i.inc, 7 69 %cmp = icmp eq i32 %and, 0 70 br i1 %cmp, label %end, label %loop 71 72end: 73 ret void 74} 75