| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ;RUN: opt -loop-unswitch -enable-new-pm=0 -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S < %s | FileCheck %s |
| |
| define i32 @foo(i32 %a, i32 %b) { |
| ; CHECK-LABEL: @foo( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[CMP0:%.*]] = icmp sgt i32 [[B:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP0]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[A:%.*]], 12345 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY_US:%.*]], label [[FOR_BODY:%.*]], !prof [[PROF0:![0-9]+]] |
| ; CHECK: for.body.us: |
| ; CHECK-NEXT: [[INC_I_US:%.*]] = phi i32 [ [[INC_US:%.*]], [[FOR_BODY_US]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[MUL_I_US:%.*]] = phi i32 [ [[B]], [[FOR_BODY_US]] ], [ 3, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ADD_I_US:%.*]] = phi i32 [ [[ADD_US:%.*]], [[FOR_BODY_US]] ], [ [[A]], [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ADD_US]] = add nsw i32 [[ADD_I_US]], 123 |
| ; CHECK-NEXT: [[INC_US]] = add nuw nsw i32 [[INC_I_US]], 1 |
| ; CHECK-NEXT: [[EXITCOND_US:%.*]] = icmp eq i32 [[INC_US]], [[B]] |
| ; CHECK-NEXT: br i1 [[EXITCOND_US]], label [[FOR_COND_CLEANUP]], label [[FOR_BODY_US]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INC_I:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[MUL_I:%.*]] = phi i32 [ [[MUL:%.*]], [[FOR_BODY]] ], [ 3, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ADD_I:%.*]] = phi i32 [ [[A]], [[FOR_BODY]] ], [ [[A]], [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[MUL]] = mul nsw i32 [[MUL_I]], [[B]] |
| ; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[INC_I]], 1 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[INC]], [[B]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_COND_CLEANUP]], label [[FOR_BODY]] |
| ; CHECK: for.cond.cleanup: |
| ; CHECK-NEXT: [[T2:%.*]] = phi i32 [ [[B]], [[ENTRY:%.*]] ], [ [[B]], [[FOR_BODY_US]] ], [ [[MUL]], [[FOR_BODY]] ] |
| ; CHECK-NEXT: [[T1:%.*]] = phi i32 [ [[A]], [[ENTRY]] ], [ [[ADD_US]], [[FOR_BODY_US]] ], [ [[A]], [[FOR_BODY]] ] |
| ; CHECK-NEXT: [[ADD3:%.*]] = add nsw i32 [[T2]], [[T1]] |
| ; CHECK-NEXT: ret i32 [[ADD3]] |
| ; |
| entry: |
| br label %for.body.lr.ph |
| |
| for.body.lr.ph: ; preds = %entry |
| %cmp0 = icmp sgt i32 %b, 0 |
| br i1 %cmp0, label %for.body, label %for.cond.cleanup |
| |
| for.body: ; preds = %for.inc, %for.body.lr.ph |
| %inc.i = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.inc ] |
| %mul.i = phi i32 [ 3, %for.body.lr.ph ], [ %mul.p, %for.inc ] |
| %add.i = phi i32 [ %a, %for.body.lr.ph ], [ %add.p, %for.inc ] |
| %cmp1 = icmp eq i32 %a, 12345 |
| br i1 %cmp1, label %if.then, label %if.else, !prof !0 |
| if.then: ; preds = %for.body |
| %add = add nsw i32 %add.i, 123 |
| br label %for.inc |
| |
| if.else: ; preds = %for.body |
| %mul = mul nsw i32 %mul.i, %b |
| br label %for.inc |
| for.inc: ; preds = %if.then, %if.else |
| %mul.p = phi i32 [ %b, %if.then ], [ %mul, %if.else ] |
| %add.p = phi i32 [ %add, %if.then ], [ %a, %if.else ] |
| %inc = add nuw nsw i32 %inc.i, 1 |
| %exitcond = icmp eq i32 %inc, %b |
| br i1 %exitcond, label %for.cond.cleanup, label %for.body |
| |
| for.cond.cleanup: ; preds = %for.inc, %for.body.lr.ph |
| %t2 = phi i32 [ %b, %for.body.lr.ph ], [ %mul.p, %for.inc ] |
| %t1 = phi i32 [ %a, %for.body.lr.ph ], [ %add.p, %for.inc ] |
| %add3 = add nsw i32 %t2, %t1 |
| ret i32 %add3 |
| } |
| |
| define void @foo_swapped(i32 %a, i32 %b) { |
| ; CHECK-LABEL: @foo_swapped( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 1, 2 |
| ; CHECK-NEXT: br i1 [[CMP1]], label [[FOR_BODY:%.*]], label [[FOR_COND_CLEANUP_SPLIT:%.*]], !prof [[PROF1:![0-9]+]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[INC_I:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: [[ADD_I:%.*]] = phi i32 [ [[ADD:%.*]], [[FOR_BODY]] ], [ 100, [[ENTRY]] ] |
| ; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[INC_I]], 1 |
| ; CHECK-NEXT: [[ADD]] = add nsw i32 [[A:%.*]], [[ADD_I]] |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[INC]], [[B:%.*]] |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_COND_CLEANUP_SPLIT]], label [[FOR_BODY]] |
| ; CHECK: for.cond.cleanup.split: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %for.body |
| for.body: ; preds = %for.inc, %entry |
| %inc.i = phi i32 [ 0, %entry ], [ %inc, %if.then ] |
| %add.i = phi i32 [ 100, %entry ], [ %add, %if.then ] |
| %inc = add nuw nsw i32 %inc.i, 1 |
| %cmp1 = icmp eq i32 1, 2 |
| br i1 %cmp1, label %if.then, label %for.cond.cleanup, !prof !0 |
| |
| if.then: ; preds = %for.body |
| %add = add nsw i32 %a, %add.i |
| |
| %exitcond = icmp eq i32 %inc, %b |
| br i1 %exitcond, label %for.cond.cleanup, label %for.body |
| |
| for.cond.cleanup: ; preds = %for.inc, %for.body.lr.ph, %for.body |
| ret void |
| } |
| !0 = !{!"branch_weights", i32 64, i32 4} |
| |
| ;CHECK: !0 = !{!"branch_weights", i32 64, i32 4} |
| ;CHECK: !1 = !{!"branch_weights", i32 4, i32 64} |