1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2 2; RUN: opt -S -passes='print<scalar-evolution>,loop(loop-unroll-full)' -verify-scev < %s 2>/dev/null | FileCheck %s 3 4define i32 @test(ptr %arg) { 5; CHECK-LABEL: define i32 @test 6; CHECK-SAME: (ptr [[ARG:%.*]]) { 7; CHECK-NEXT: entry: 8; CHECK-NEXT: br label [[LOOP_PEEL_BEGIN:%.*]] 9; CHECK: loop.peel.begin: 10; CHECK-NEXT: br label [[LOOP_PEEL:%.*]] 11; CHECK: loop.peel: 12; CHECK-NEXT: [[LOAD_PEEL:%.*]] = load i32, ptr null, align 4 13; CHECK-NEXT: br i1 false, label [[LOOP_EXIT:%.*]], label [[LOOP_LATCH_PEEL:%.*]] 14; CHECK: loop.latch.peel: 15; CHECK-NEXT: br i1 false, label [[LOOP_EXIT]], label [[LOOP_PEEL_NEXT:%.*]] 16; CHECK: loop.peel.next: 17; CHECK-NEXT: br label [[LOOP_PEEL_NEXT1:%.*]] 18; CHECK: loop.peel.next1: 19; CHECK-NEXT: br label [[ENTRY_PEEL_NEWPH:%.*]] 20; CHECK: entry.peel.newph: 21; CHECK-NEXT: br label [[LOOP:%.*]] 22; CHECK: loop: 23; CHECK-NEXT: [[LOAD:%.*]] = load i32, ptr null, align 4 24; CHECK-NEXT: br i1 false, label [[LOOP_EXIT_LOOPEXIT:%.*]], label [[LOOP_LATCH:%.*]] 25; CHECK: loop.latch: 26; CHECK-NEXT: br i1 false, label [[LOOP_EXIT_LOOPEXIT]], label [[LOOP]], !llvm.loop [[LOOP0:![0-9]+]] 27; CHECK: loop.exit.loopexit: 28; CHECK-NEXT: [[EXITVAL_PH:%.*]] = phi i32 [ [[LOAD]], [[LOOP]] ], [ 0, [[LOOP_LATCH]] ] 29; CHECK-NEXT: br label [[LOOP_EXIT]] 30; CHECK: loop.exit: 31; CHECK-NEXT: [[EXITVAL:%.*]] = phi i32 [ [[LOAD_PEEL]], [[LOOP_PEEL]] ], [ 0, [[LOOP_LATCH_PEEL]] ], [ [[EXITVAL_PH]], [[LOOP_EXIT_LOOPEXIT]] ] 32; CHECK-NEXT: ret i32 [[EXITVAL]] 33; 34entry: 35 br label %loop 36 37loop: 38 %iv = phi ptr [ %arg, %loop.latch ], [ null, %entry ] 39 %load = load i32, ptr null, align 4 40 br i1 false, label %loop.exit, label %loop.latch 41 42loop.latch: 43 br i1 false, label %loop.exit, label %loop 44 45loop.exit: 46 %exitval = phi i32 [ 0, %loop.latch ], [ %load, %loop ] 47 ret i32 %exitval 48} 49