| 1 | // Tests that ProcessModID.m_memory_id is not bumped when evaluating expressions without side effects. |
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| 2 | |
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| 3 | // REQUIRES: target-windows && (target-x86 || target-x86_64) |
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| 4 | // Due to different implementations exact numbers (m_stop_id) are different on different OSs. So we lock this test to specific platform (Windows). It is limited to x86/x64 because on x86/x64, running get() |
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| 5 | // requires that we write the return address to the stack, this does not happen on AArch64. |
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| 6 | |
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| 7 | // RUN: %build %s -o %t |
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| 8 | // RUN: %lldb %t \ |
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| 9 | // RUN: -o "settings set target.process.track-memory-cache-changes false" \ |
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| 10 | // RUN: -o "run" \ |
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| 11 | // RUN: -o "process status -d" \ |
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| 12 | // RUN: -o "expr x.i != 42" \ |
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| 13 | // RUN: -o "process status -d" \ |
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| 14 | // RUN: -o "process status -d" \ |
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| 15 | // RUN: -o "expr x.get()" \ |
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| 16 | // RUN: -o "process status -d" \ |
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| 17 | // RUN: -o "process status -d" \ |
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| 18 | // RUN: -o "expr x.i = 10" \ |
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| 19 | // RUN: -o "process status -d" \ |
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| 20 | // RUN: -o "process status -d" \ |
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| 21 | // RUN: -o "continue" \ |
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| 22 | // RUN: -o "process status -d" \ |
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| 23 | // RUN: -o "exit" | FileCheck %s -dump-input=fail |
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| 24 | |
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| 25 | class X { |
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| 26 | int i = 0; |
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| 27 | |
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| 28 | public: |
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| 29 | int get() { return i; } |
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| 30 | }; |
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| 31 | |
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| 32 | int main() { |
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| 33 | X x; |
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| 34 | x.get(); |
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| 35 | |
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| 36 | __builtin_debugtrap(); |
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| 37 | __builtin_debugtrap(); |
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| 38 | return 0; |
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| 39 | } |
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| 40 | |
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| 41 | // CHECK-LABEL: process status -d |
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| 42 | // CHECK: m_stop_id: [[#STOP_ID:]] |
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| 43 | // CHECK: m_memory_id: [[#MEMORY_ID:]] |
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| 44 | |
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| 45 | // CHECK-LABEL: expr x.i != 42 |
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| 46 | // IDs are not changed when executing simple expressions |
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| 47 | |
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| 48 | // CHECK-LABEL: process status -d |
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| 49 | // CHECK: m_stop_id: [[#STOP_ID]] |
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| 50 | // CHECK: m_memory_id: [[#MEMORY_ID]] |
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| 51 | |
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| 52 | // CHECK-LABEL: process status -d |
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| 53 | // Remember new values |
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| 54 | // CHECK: m_stop_id: [[#STOP_ID:]] |
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| 55 | // CHECK: m_memory_id: [[#MEMORY_ID:]] |
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| 56 | |
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| 57 | // CHECK-LABEL: expr x.get() |
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| 58 | // Expression causes ID to be bumped because LLDB has to execute function and in doing |
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| 59 | // so must write the return address to the stack. |
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| 60 | |
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| 61 | // CHECK-LABEL: process status -d |
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| 62 | // CHECK-NOT: m_stop_id: [[#STOP_ID]] |
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| 63 | // CHECK-NOT: m_memory_id: [[#MEMORY_ID]] |
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| 64 | |
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| 65 | // CHECK-LABEL: process status -d |
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| 66 | // Remember new values |
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| 67 | // CHECK: m_stop_id: [[#STOP_ID:]] |
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| 68 | // CHECK: m_memory_id: [[#MEMORY_ID:]] |
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| 69 | |
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| 70 | // CHECK-LABEL: expr x.i = 10 |
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| 71 | // Expression causes MemoryID to be bumped because LLDB writes to non-cache memory |
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| 72 | |
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| 73 | // CHECK-LABEL: process status -d |
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| 74 | // CHECK: m_stop_id: [[#STOP_ID]] |
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| 75 | // CHECK-NOT: m_memory_id: [[#MEMORY_ID]] |
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| 76 | |
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| 77 | // CHECK-LABEL: process status -d |
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| 78 | // Remember new values |
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| 79 | // CHECK: m_stop_id: [[#STOP_ID:]] |
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| 80 | // CHECK: m_memory_id: [[#MEMORY_ID:]] |
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| 81 | |
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| 82 | // CHECK-LABEL: continue |
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| 83 | // Continue causes StopID to be bumped because process is resumed |
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| 84 | |
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| 85 | // CHECK-LABEL: process status -d |
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| 86 | // CHECK-NOT: m_stop_id: [[#STOP_ID]] |
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| 87 | // CHECK: m_memory_id: [[#MEMORY_ID]] |
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| 88 | |
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