| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 |
| ; RUN: opt -S -passes=newgvn %s | FileCheck %s |
| |
| |
| @d = global i32 1, align 4 |
| @c = common global i32 0, align 4 |
| @a = common global i32 0, align 4 |
| @b = common global i32 0, align 4 |
| |
| define i32 @main() { |
| ; CHECK-LABEL: define i32 @main() { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TMP:%.*]] = load i32, ptr @d, align 4 |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr @c, align 4 |
| ; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[TMP1]], -1 |
| ; CHECK-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: br label [[L:%.*]] |
| ; CHECK: L: |
| ; CHECK-NEXT: [[E_0:%.*]] = phi i32 [ 0, [[IF_THEN]] ], [ [[E_1:%.*]], [[IF_THEN4:%.*]] ] |
| ; CHECK-NEXT: br label [[IF_END]] |
| ; CHECK: if.end: |
| ; CHECK-NEXT: [[E_1]] = phi i32 [ [[E_0]], [[L]] ], [ [[TMP]], [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: store i32 [[E_1]], ptr @a, align 4 |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr @b, align 4 |
| ; CHECK-NEXT: store i32 0, ptr @b, align 4 |
| ; CHECK-NEXT: [[SEXT:%.*]] = shl i32 [[TMP2]], 16 |
| ; CHECK-NEXT: [[CONV1:%.*]] = ashr exact i32 [[SEXT]], 16 |
| ; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[CONV1]], [[TMP1]] |
| ; CHECK-NEXT: [[ADD2:%.*]] = add nsw i32 [[ADD]], [[E_1]] |
| ; CHECK-NEXT: store i32 [[ADD2]], ptr @a, align 4 |
| ; CHECK-NEXT: [[TOBOOL3:%.*]] = icmp eq i32 [[ADD2]], 0 |
| ; CHECK-NEXT: br i1 [[TOBOOL3]], label [[IF_END5:%.*]], label [[IF_THEN4]] |
| ; CHECK: if.then4: |
| ; CHECK-NEXT: br label [[L]] |
| ; CHECK: if.end5: |
| ; CHECK-NEXT: ret i32 0 |
| ; |
| entry: |
| %tmp = load i32, ptr @d, align 4 |
| %tmp1 = load i32, ptr @c, align 4 |
| %tobool = icmp eq i32 %tmp1, -1 |
| br i1 %tobool, label %if.end, label %if.then |
| |
| if.then: ; preds = %entry |
| br label %L |
| |
| L: ; preds = %if.then4, %if.then |
| %e.0 = phi i32 [ 0, %if.then ], [ %e.1, %if.then4 ] |
| br label %if.end |
| |
| if.end: ; preds = %L, %entry |
| %e.1 = phi i32 [ %e.0, %L ], [ %tmp, %entry ] |
| store i32 %e.1, ptr @a, align 4 |
| %tmp2 = load i32, ptr @b, align 4 |
| store i32 0, ptr @b, align 4 |
| %sext = shl i32 %tmp2, 16 |
| %conv1 = ashr exact i32 %sext, 16 |
| %tmp3 = load i32, ptr @c, align 4 |
| %add = add nsw i32 %conv1, %tmp3 |
| %tmp4 = load i32, ptr @a, align 4 |
| %and = and i32 %tmp4, %e.1 |
| %add2 = add nsw i32 %add, %and |
| store i32 %add2, ptr @a, align 4 |
| %tobool3 = icmp eq i32 %add2, 0 |
| br i1 %tobool3, label %if.end5, label %if.then4 |
| |
| if.then4: ; preds = %if.end |
| br label %L |
| |
| if.end5: ; preds = %if.end |
| ret i32 0 |
| } |