| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -passes=newgvn -S %s | FileCheck %s |
| |
| @a = common global i32 0, align 4 |
| @.str = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1 |
| define i32 @main() #0 { |
| ; CHECK-LABEL: @main( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr @a, align 4 |
| ; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[TMP0]], -1 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[TMP0]], -1 |
| ; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END:%.*]] |
| ; CHECK: if.then: |
| ; CHECK-NEXT: br label [[IF_END]] |
| ; CHECK: if.end: |
| ; CHECK-NEXT: [[PHIOFOPS:%.*]] = phi i32 [ [[TMP0]], [[ENTRY:%.*]] ], [ [[NEG]], [[IF_THEN]] ] |
| ; CHECK-NEXT: [[STOREMERGE:%.*]] = phi i32 [ [[TMP0]], [[IF_THEN]] ], [ [[NEG]], [[ENTRY]] ] |
| ; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i32 [[STOREMERGE]], [[PHIOFOPS]] |
| ; CHECK-NEXT: br i1 [[CMP2]], label [[IF_THEN3:%.*]], label [[IF_END6:%.*]] |
| ; CHECK: if.then3: |
| ; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[STOREMERGE]], -1 |
| ; CHECK-NEXT: br i1 [[TOBOOL]], label [[LOR_RHS:%.*]], label [[LOR_END:%.*]] |
| ; CHECK: lor.rhs: |
| ; CHECK-NEXT: [[TOBOOL5:%.*]] = icmp ne i32 [[TMP0]], 0 |
| ; CHECK-NEXT: [[PHITMP:%.*]] = zext i1 [[TOBOOL5]] to i32 |
| ; CHECK-NEXT: br label [[LOR_END]] |
| ; CHECK: lor.end: |
| ; CHECK-NEXT: [[TMP1:%.*]] = phi i32 [ 1, [[IF_THEN3]] ], [ [[PHITMP]], [[LOR_RHS]] ] |
| ; CHECK-NEXT: store i32 [[TMP1]], ptr @a, align 4 |
| ; CHECK-NEXT: br label [[IF_END6]] |
| ; CHECK: if.end6: |
| ; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr @a, align 4 |
| ; CHECK-NEXT: [[CALL:%.*]] = call i32 (ptr, ...) @printf(ptr @.str, i32 [[TMP2]]) |
| ; CHECK-NEXT: ret i32 0 |
| ; |
| entry: |
| %0 = load i32, ptr @a, align 4 |
| %neg = xor i32 %0, -1 |
| %cmp = icmp sgt i32 %0, -1 |
| br i1 %cmp, label %if.then, label %if.end |
| |
| if.then: |
| br label %if.end |
| |
| if.end: |
| %storemerge = phi i32 [ %0, %if.then ], [ %neg, %entry ] |
| %neg1 = xor i32 %storemerge, -1 |
| %cmp2 = icmp ult i32 %storemerge, %neg1 |
| br i1 %cmp2, label %if.then3, label %if.end6 |
| |
| if.then3: |
| %tobool = icmp eq i32 %storemerge, -1 |
| br i1 %tobool, label %lor.rhs, label %lor.end |
| |
| lor.rhs: |
| %tobool5 = icmp ne i32 %0, 0 |
| %phitmp = zext i1 %tobool5 to i32 |
| br label %lor.end |
| |
| lor.end: |
| %1 = phi i32 [ 1, %if.then3 ], [ %phitmp, %lor.rhs ] |
| store i32 %1, ptr @a, align 4 |
| br label %if.end6 |
| |
| if.end6: |
| %2 = load i32, ptr @a, align 4 |
| %call = call i32 (ptr, ...) @printf(ptr @.str, i32 %2) #3 |
| ret i32 0 |
| } |
| declare i32 @printf(ptr, ...) #2 |