| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -passes=newgvn -S < %s | FileCheck %s |
| |
| ; Make sure the created ssa copies are cleaned up. See PR38804. |
| |
| ; CHECK-NOT: ssa_copy |
| |
| @b = external dso_local local_unnamed_addr global i32, align 4 |
| @a = external dso_local local_unnamed_addr global i8, align 1 |
| @f = external dso_local local_unnamed_addr global i16, align 2 |
| |
| define void @g() { |
| ; CHECK-LABEL: @g( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br i1 undef, label [[FOR_COND1THREAD_PRE_SPLIT:%.*]], label [[FOR_COND_PREHEADER:%.*]] |
| ; CHECK: for.cond.preheader: |
| ; CHECK-NEXT: unreachable |
| ; CHECK: for.cond1thread-pre-split: |
| ; CHECK-NEXT: br label [[FOR_END4_SPLIT:%.*]] |
| ; CHECK: for.end4.split: |
| ; CHECK-NEXT: br i1 true, label [[FOR_COND6_PREHEADER:%.*]], label [[IF_END11:%.*]] |
| ; CHECK: for.cond6.preheader: |
| ; CHECK-NEXT: br i1 undef, label [[FOR_COND6_PREHEADER3:%.*]], label [[IF_END11_LOOPEXIT:%.*]] |
| ; CHECK: for.cond6.preheader3: |
| ; CHECK-NEXT: br label [[IF_END11_LOOPEXIT]] |
| ; CHECK: if.end11.loopexit: |
| ; CHECK-NEXT: [[STOREMERGE_LCSSA:%.*]] = phi i32 [ 0, [[FOR_COND6_PREHEADER]] ], [ 1, [[FOR_COND6_PREHEADER3]] ] |
| ; CHECK-NEXT: store i32 [[STOREMERGE_LCSSA]], ptr @b, align 4 |
| ; CHECK-NEXT: br label [[IF_END11]] |
| ; CHECK: if.end11: |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr @b, align 4 |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i8, ptr @a, align 1 |
| ; CHECK-NEXT: [[CONV:%.*]] = sext i8 [[TMP1]] to i32 |
| ; CHECK-NEXT: [[CMP12:%.*]] = icmp eq i32 [[TMP0]], [[CONV]] |
| ; CHECK-NEXT: br i1 [[CMP12]], label [[IF_THEN14:%.*]], label [[IF_END16:%.*]] |
| ; CHECK: if.then14: |
| ; CHECK-NEXT: [[CONV15:%.*]] = trunc i32 [[TMP0]] to i16 |
| ; CHECK-NEXT: store i16 [[CONV15]], ptr @f, align 2 |
| ; CHECK-NEXT: unreachable |
| ; CHECK: if.end16: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %tobool = icmp eq i32 undef, 0 |
| br i1 %tobool, label %for.cond1thread-pre-split, label %for.cond.preheader |
| |
| for.cond.preheader: ; preds = %entry |
| unreachable |
| |
| for.cond1thread-pre-split: ; preds = %entry |
| br label %for.end4.split |
| |
| for.end4.split: ; preds = %for.cond1thread-pre-split |
| br i1 %tobool, label %for.cond6.preheader, label %if.end11 |
| |
| for.cond6.preheader: ; preds = %for.end4.split |
| br i1 undef, label %for.cond6.preheader3, label %if.end11.loopexit |
| |
| for.cond6.preheader3: ; preds = %for.cond6.preheader |
| br label %if.end11.loopexit |
| |
| if.end11.loopexit: ; preds = %for.cond6.preheader3, %for.cond6.preheader |
| %storemerge.lcssa = phi i32 [ 0, %for.cond6.preheader ], [ 1, %for.cond6.preheader3 ] |
| store i32 %storemerge.lcssa, ptr @b, align 4 |
| br label %if.end11 |
| |
| if.end11: ; preds = %if.end11.loopexit, %for.end4.split |
| %0 = load i32, ptr @b, align 4 |
| %1 = load i8, ptr @a, align 1 |
| %conv = sext i8 %1 to i32 |
| %cmp12 = icmp eq i32 %0, %conv |
| br i1 %cmp12, label %if.then14, label %if.end16 |
| |
| if.then14: ; preds = %if.end11 |
| %conv15 = trunc i32 %0 to i16 |
| store i16 %conv15, ptr @f, align 2 |
| unreachable |
| |
| if.end16: ; preds = %if.end11 |
| ret void |
| } |