1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2 2; RUN: opt -S -passes=indvars < %s | FileCheck %s 3 4declare void @use(i1) 5 6; Make sure the division does not get expanded into the preheader. 7 8define i32 @test(i32 %arg) { 9; CHECK-LABEL: define i32 @test 10; CHECK-SAME: (i32 [[ARG:%.*]]) { 11; CHECK-NEXT: entry: 12; CHECK-NEXT: br label [[LOOP:%.*]] 13; CHECK: loop: 14; CHECK-NEXT: br i1 false, label [[IF:%.*]], label [[LOOP_LATCH:%.*]] 15; CHECK: if: 16; CHECK-NEXT: [[DIV:%.*]] = udiv i32 7, [[ARG]] 17; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 1, [[DIV]] 18; CHECK-NEXT: call void @use(i1 [[CMP2]]) 19; CHECK-NEXT: br label [[LOOP_LATCH]] 20; CHECK: loop.latch: 21; CHECK-NEXT: br i1 false, label [[LOOP]], label [[EXIT:%.*]] 22; CHECK: exit: 23; CHECK-NEXT: ret i32 1 24; 25entry: 26 br label %loop 27 28loop: 29 %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ] 30 %iv.next = add i32 %iv, 1 31 %cmp = icmp eq i32 %iv, 1 32 br i1 %cmp, label %if, label %loop.latch 33 34if: 35 %div = udiv i32 7, %arg 36 %cmp2 = icmp ult i32 %iv.next, %div 37 call void @use(i1 %cmp2) 38 br label %loop.latch 39 40loop.latch: 41 br i1 false, label %loop, label %exit 42 43exit: 44 %inc.lcssa = phi i32 [ %iv.next, %loop.latch ] 45 ret i32 %inc.lcssa 46} 47