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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -S -passes=licm < %s | FileCheck %s3; RUN: opt -aa-pipeline=basic-aa -passes='require<aa>,require<target-ir>,require<scalar-evolution>,require<opt-remark-emit>,loop-mssa(licm)' -S %s| FileCheck %s4;5; Manually validate LCSSA form is preserved even after SSAUpdater is used to6; promote things in the loop bodies.7 8target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"9target triple = "x86_64-unknown-linux-gnu"10 11@x = common global i32 0, align 412@y = common global i32 0, align 413 14define void @PR18688(i1 %arg) {15; CHECK-LABEL: @PR18688(16; CHECK-NEXT: entry:17; CHECK-NEXT: br i1 [[ARG:%.*]], label [[RETURN:%.*]], label [[OUTER_PREHEADER:%.*]]18; CHECK: outer.preheader:19; CHECK-NEXT: [[Y_VAL:%.*]] = load i32, ptr @y, align 420; CHECK-NEXT: [[ICMP:%.*]] = icmp eq i32 [[Y_VAL]], 021; CHECK-NEXT: br label [[OUTER_HEADER:%.*]]22; CHECK: outer.header:23; CHECK-NEXT: br i1 [[ARG]], label [[OUTER_LATCH:%.*]], label [[INNER_PREHEADER:%.*]]24; CHECK: inner.preheader:25; CHECK-NEXT: br label [[INNER_HEADER:%.*]]26; CHECK: inner.header:27; CHECK-NEXT: [[TMP0:%.*]] = phi i32 [ [[TMP1:%.*]], [[INNER_LATCH:%.*]] ], [ 0, [[INNER_PREHEADER]] ]28; CHECK-NEXT: br i1 [[ARG]], label [[INNER_BODY_RHS:%.*]], label [[INNER_LATCH]]29; CHECK: inner.body.rhs:30; CHECK-NEXT: br label [[INNER_LATCH]]31; CHECK: inner.latch:32; CHECK-NEXT: [[TMP1]] = phi i32 [ 0, [[INNER_BODY_RHS]] ], [ [[TMP0]], [[INNER_HEADER]] ]33; CHECK-NEXT: br i1 [[ICMP]], label [[INNER_EXIT:%.*]], label [[INNER_HEADER]]34; CHECK: inner.exit:35; CHECK-NEXT: [[DOTLCSSA1:%.*]] = phi i32 [ [[TMP1]], [[INNER_LATCH]] ]36; CHECK-NEXT: br label [[OUTER_LATCH]]37; CHECK: outer.latch:38; CHECK-NEXT: [[TMP2:%.*]] = phi i32 [ [[DOTLCSSA1]], [[INNER_EXIT]] ], [ 0, [[OUTER_HEADER]] ]39; CHECK-NEXT: br i1 [[ARG]], label [[OUTER_EXIT:%.*]], label [[OUTER_HEADER]]40; CHECK: outer.exit:41; CHECK-NEXT: [[DOTLCSSA:%.*]] = phi i32 [ [[TMP2]], [[OUTER_LATCH]] ]42; CHECK-NEXT: store i32 [[DOTLCSSA]], ptr @x, align 443; CHECK-NEXT: br label [[RETURN]]44; CHECK: return:45; CHECK-NEXT: ret void46;47 48entry:49 br i1 %arg, label %return, label %outer.preheader50 51outer.preheader:52 br label %outer.header53 54outer.header:55 store i32 0, ptr @x, align 456 br i1 %arg, label %outer.latch, label %inner.preheader57 58inner.preheader:59 br label %inner.header60 61inner.header:62 br i1 %arg, label %inner.body.rhs, label %inner.latch63 64inner.body.rhs:65 store i32 0, ptr @x, align 466 br label %inner.latch67 68inner.latch:69 %y_val = load i32, ptr @y, align 470 %icmp = icmp eq i32 %y_val, 071 br i1 %icmp, label %inner.exit, label %inner.header72 73inner.exit:74 br label %outer.latch75 76outer.latch:77 br i1 %arg, label %outer.exit, label %outer.header78 79outer.exit:80 br label %return81 82return:83 ret void84}85 86