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Revert "C++: Do not generate IR for functions with multiple entry points" #17948

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Nov 13, 2024
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Revert "C++: Do not generate IR for functions with multiple entry points" #17948

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2 changes: 0 additions & 2 deletions cpp/ql/lib/semmle/code/cpp/ir/implementation/raw/internal/TranslatedElement.qll
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Original file line number Diff line number Diff line change
Expand Up @@ -196,8 +196,6 @@ private predicate isInvalidFunction(Function func) {
expr.getEnclosingFunction() = func and
not exists(expr.getType())
)
or
count(func.getEntryPoint().getLocation()) > 1
}

/**
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67 changes: 67 additions & 0 deletions cpp/ql/test/library-tests/ir/multiple-entry-points/raw_ir.expected
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Original file line number Diff line number Diff line change
@@ -0,0 +1,67 @@
test1.cpp:
# 3| int foo(int)
# 3| Block 0
# 3| v3_1(void) = EnterFunction :
test2.cpp:
# 1| v3_1(void) = EnterFunction :
test1.cpp:
# 3| mu3_2(unknown) = AliasedDefinition :
test2.cpp:
# 1| mu3_2(unknown) = AliasedDefinition :
test1.cpp:
# 3| mu3_3(unknown) = InitializeNonLocal :
test2.cpp:
# 1| mu3_3(unknown) = InitializeNonLocal :
test1.cpp:
# 3| r3_4(glval<int>) = VariableAddress[i] :
test2.cpp:
# 1| r3_4(glval<int>) = VariableAddress[i] :
test1.cpp:
# 3| mu3_5(int) = InitializeParameter[i] : &:r1_4, &:r3_4
test2.cpp:
# 1| mu3_5(int) = InitializeParameter[i] : &:r1_4, &:r3_4
#-----| Goto -> Block 2
#-----| Goto -> Block 2

# 1| Block 0
#-----| Goto -> Block 2
#-----| Goto -> Block 2

test1.cpp:
# 3| Block 1
# 3| r3_6(glval<int>) = VariableAddress[#return] :
test2.cpp:
# 1| r3_6(glval<int>) = VariableAddress[#return] :
test1.cpp:
# 3| v3_7(void) = ReturnValue : &:r1_6, &:r3_6, ~m?
test2.cpp:
# 1| v3_7(void) = ReturnValue : &:r1_6, &:r3_6, ~m?
test1.cpp:
# 3| v3_8(void) = AliasedUse : ~m?
test2.cpp:
# 1| v3_8(void) = AliasedUse : ~m?
test1.cpp:
# 3| v3_9(void) = ExitFunction :
test2.cpp:
# 1| v3_9(void) = ExitFunction :

# 1| Block 1

test1.cpp:
# 4| Block 2
# 4| r4_1(glval<int>) = VariableAddress[#return] :
# 4| r4_2(int) = Constant[42] :
# 4| mu4_3(int) = Store[#return] : &:r4_1, r4_2
#-----| Goto -> Block 1
#-----| Goto -> Block 1

test2.cpp:
# 2| Block 2
# 2| r2_1(glval<int>) = VariableAddress[#return] :
# 2| r2_2(glval<int>) = VariableAddress[i] :
# 2| r2_3(int) = Load[i] : &:r2_2, ~m?
# 2| mu2_4(int) = Store[#return] : &:r2_1, r2_3
#-----| Goto -> Block 1
#-----| Goto -> Block 1

# 1| int foo(int)
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