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Dead code analysis with labelled if did not work properly.

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This commit is contained in:
Christoffer Lerno
2025-10-02 21:24:05 +02:00
parent a03446a26d
commit 7d6c844b99
4 changed files with 89 additions and 2 deletions
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1
test/test_suite/statements/foreach_with_only_ref.c3t
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@@ -1,3 +1,4 @@
// #target: macos-x64
module test;
import std;

81
test/test_suite/statements/if_break.c3t Normal file
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@@ -0,0 +1,81 @@
// #target: macos-x64
module test;
int a;
fn void test()
{
if LABEL: (false)
{
a += 1;
}
else if (true)
{
a += 2;
break LABEL;
}
else
{
a += 3;
}
a *= 4;
}
fn void main()
{
if LABEL: (true)
{
a += 1;
break LABEL;
}
else if (true)
{
a += 2;
}
else
{
a += 3;
}
a *= 4;
}
/* #expect: test.ll
define void @test.test() #0 {
entry:
br label %if.else
if.else: ; preds = %entry
br label %if.then
if.then: ; preds = %if.else
%0 = load i32, ptr @test.a, align 4
%add = add i32 %0, 2
store i32 %add, ptr @test.a, align 4
br label %if.exit
if.exit: ; preds = %if.then
%1 = load i32, ptr @test.a, align 4
%mul = mul i32 %1, 4
store i32 %mul, ptr @test.a, align 4
ret void
}
; Function Attrs: nounwind uwtable
define void @test.main() #0 {
entry:
br label %if.then
if.then: ; preds = %entry
%0 = load i32, ptr @test.a, align 4
%add = add i32 %0, 1
store i32 %add, ptr @test.a, align 4
br label %if.exit
if.exit: ; preds = %if.then
%1 = load i32, ptr @test.a, align 4
%mul = mul i32 %1, 4
store i32 %mul, ptr @test.a, align 4
ret void
}