# First, let's see the context around lines 1782-1784 in frame.rs
head -1790 crates/vm/src/frame.rs | tail -20

# Find the Instruction enum definition
fd -t f "bytecode.rs" | head -5

# Let's also check if there's an instruction definition in frame.rs itself
rg "enum Instruction" crates/vm/src/ -A 20

# Find and read the Instruction enum definition
rg "pub enum Instruction" crates/compiler-core/src/bytecode.rs -A 100

# Get more context around lines 1782-1784 to see the full match statement
sed -n '1700,1790p' crates/vm/src/frame.rs | head -100

# Find the beginning of the match statement that contains lines 1782-1784
# Start from line 1782 and go backwards to find the match statement
sed -n '1600,1782p' crates/vm/src/frame.rs | tail -200

# Search for the function name that contains this code
sed -n '1650,1782p' crates/vm/src/frame.rs | grep -E "fn |match " | head -20

# Find the function definition containing this match statement
sed -n '1400,1700p' crates/vm/src/frame.rs | grep -B 50 "match.*instruction" | head -60

# Let's search for the execute or dispatch function that contains this match
rg "fn execute" crates/vm/src/frame.rs -A 5 | head -40

# Find the beginning of execute_instruction function
rg "fn execute_instruction" crates/vm/src/frame.rs -A 500 | head -100

# Count the number of instruction variants and see if the match is exhaustive
rg "bytecode::Instruction::" crates/vm/src/frame.rs | wc -l

# Check if there are placeholder instructions and how they're handled
rg "Placeholder" crates/compiler-core/src/bytecode.rs | head -20

# Look for comments around the catch-all unreachable to understand its intent
sed -n '1770,1790p' crates/vm/src/frame.rs

# Get the full list of instruction variants from the enum
rg "^\s+([\w:]+)\s*=" crates/compiler-core/src/bytecode.rs | grep -E "pub enum Instruction" -A 200 | grep "=" | wc -l

# Check if Rust compiler would complain about non-exhaustive match
# Look for warnings about unhandled variants
rg "unreachable" crates/vm/src/frame.rs -B 5 -A 2

# Let's verify if the Instruction enum is marked as exhaustive
rg "enum Instruction" crates/compiler-core/src/bytecode.rs -B 2 -A 1

# Get the complete list of all instruction variants from the enum
rg "pub enum Instruction" crates/compiler-core/src/bytecode.rs -A 500 | grep -E "^\s+\w+.*=" | sed 's/.*Instruction:://' | sed 's/\s*=.*//' | sort > /tmp/enum_variants.txt

# Get all the instruction variants handled in execute_instruction
rg "bytecode::Instruction::" crates/vm/src/frame.rs | sed 's/.*bytecode::Instruction:://' | sed 's/[^a-zA-Z_].*//' | sort | uniq > /tmp/handled_variants.txt

# Compare the two
echo "=== Variants in enum but NOT handled (should be empty or only placeholders) ==="
comm -23 /tmp/enum_variants.txt /tmp/handled_variants.txt

echo ""
echo "=== Total enum variants ==="
wc -l /tmp/enum_variants.txt

echo ""
echo "=== Total handled variants ==="
wc -l /tmp/handled_variants.txt

# Let me get a cleaner list of just the variant names from the enum
rg "pub enum Instruction" crates/compiler-core/src/bytecode.rs -A 500 | grep -E "^\s+[A-Z][a-zA-Z0-9]*(\s*{|$|\()" | awk '{print $1}' | sort | uniq > /tmp/enum_clean.txt

# Get handled variants more carefully
rg "Instruction::[A-Z]" crates/vm/src/frame.rs -o | sed 's/Instruction:://' | sort | uniq > /tmp/handled_clean.txt

echo "=== Unhandled instruction variants ==="
comm -23 /tmp/enum_clean.txt /tmp/handled_clean.txt

echo ""
echo "=== Count ==="
echo "Enum variants: $(wc -l < /tmp/enum_clean.txt)"
echo "Handled variants: $(wc -l < /tmp/handled_clean.txt)"

# Let's also check if there are any placeholder instructions that don't have handlers
rg "// Placeholder" crates/compiler-core/src/bytecode.rs | grep -oE "[A-Z][a-zA-Z0-9]*.*Placeholder" | sed 's/ .*//' > /tmp/placeholders.txt

echo "=== Placeholder instructions ==="
cat /tmp/placeholders.txt

# Let me extract instruction handlers more carefully by looking at the actual match arms
rg "bytecode::Instruction::" crates/vm/src/frame.rs | head -100 | sed 's/.*Instruction:://' | sed 's/\s*=>.*//' | sed 's/\s*{.*//' | awk '{print $1}' | sort | uniq

# Count how many match arms are in execute_instruction
rg "bytecode::Instruction::" crates/vm/src/frame.rs | wc -l

# Check if there are explicit handlers for the placeholder instructions
rg "Instruction::(Cache|BinaryOpInplaceAddUnicode|BinarySlice|EndFor|ExitInitCheck|InterpreterExit|LoadAssertionError|LoadLocals|PushNull|ReturnGenerator|StoreSlice)" crates/vm/src/frame.rs

# Let's verify the total count of instruction variants more accurately
# by extracting just the variant names from the enum definition
sed -n '/pub enum Instruction/,/^}/p' crates/compiler-core/src/bytecode.rs | grep -E '^\s+[A-Z][a-zA-Z0-9]*\s*(\{|=|\()' | wc -l

# Check the structure of the enum more carefully
sed -n '/pub enum Instruction/,/^}/p' crates/compiler-core/src/bytecode.rs | tail -50

# Let's verify if Rust's exhaustiveness checking would work here
# by checking if the enum has any special attributes
rg "#\[.*\]" crates/compiler-core/src/bytecode.rs | grep -B 5 "pub enum Instruction" | head -20

# Let's get the exact list of unhandled variants by comparing the handled list with enum
sed -n '/pub enum Instruction/,/^}/p' crates/compiler-core/src/bytecode.rs | grep -E '^\s+[A-Z]' | awk '{print $1}' | sort > /tmp/all_variants.txt

# Get all handled variants from execute_instruction
rg "bytecode::Instruction::" crates/vm/src/frame.rs | sed 's/.*Instruction:://' | sed 's/\s*=>.*//' | sed 's/\s*{.*//' | sed 's/\s*(.*//' | awk '{print $1}' | sort | uniq > /tmp/handled.txt

# Find variants that are not handled
echo "=== Variants NOT explicitly handled ==="
comm -23 /tmp/all_variants.txt /tmp/handled.txt

echo ""
echo "=== Are these all placeholders? ==="
# Check which of the unhandled are marked as placeholders
sed -n '/pub enum Instruction/,/^}/p' crates/compiler-core/src/bytecode.rs | grep -B 1 "Placeholder" | grep -E "^\s+[A-Z]" | awk '{print $1}' | sort > /tmp/placeholders_list.txt
cat /tmp/placeholders_list.txt

# Let's verify that these "unhandled" variants are actually being rejected
# by checking if there's any handling outside of execute_instruction
rg "LoadFast|LoadDeref|StoreFast|StoreDeref|DeleteFast" crates/vm/src/frame.rs | head -20

# Check if there's pattern matching on the argument or other routing logic
# that might handle these variants separately
sed -n '1200,1400p' crates/vm/src/frame.rs | grep -E "match|fn " | head -30

# Let's look at the actual match statement more carefully
# and search for specific instruction handlers
sed -n '1300,1500p' crates/vm/src/frame.rs | grep -A 3 "LoadFast\|StoreFast\|DeleteFast"

# Let's see if the unhandled variants are indeed in the match statement
# by checking the line count and structure more carefully
rg "bytecode::Instruction::" crates/vm/src/frame.rs | grep -c "=> {"

# Get a comprehensive list of what's actually being matched
sed -n '/fn execute_instruction/,/^    fn /p' crates/vm/src/frame.rs | grep "bytecode::Instruction::" | sed 's/.*Instruction:://' | sed 's/\s*=>.*//' | sed 's/\s*{.*//' | awk '{print $1}' | sort | uniq | wc -l

# Let's verify the exact list of handled variants with a more precise approach
sed -n '/fn execute_instruction/,/^    fn [a-z]/p' crates/vm/src/frame.rs | grep "bytecode::Instruction::" | sed 's/.*bytecode::Instruction:://' | sed 's/\s*[=({].*//' | sort | uniq > /tmp/actually_handled.txt

cat /tmp/actually_handled.txt | wc -l

echo ""
echo "=== Sample of handled variants ==="
head -20 /tmp/actually_handled.txt

# Check if these unhandled variants are truly all placeholders or only used variants
comm -23 /tmp/all_variants.txt /tmp/actually_handled.txt | while read var; do
  grep -q "$var.*Placeholder" <(sed -n '/pub enum Instruction/,/^}/p' crates/compiler-core/src/bytecode.rs) && echo "$var: PLACEHOLDER" || echo "$var: NOT PLACEHOLDER"
done

# Let's verify if the key instructions like LoadFast are actually being handled
# by checking the actual match arms
rg "Instruction::LoadFast\(" crates/vm/src/frame.rs

# Let's count the total lines of the match statement to understand its scope
sed -n '/fn execute_instruction/,/^    fn /p' crates/vm/src/frame.rs | wc -l

# Let's check the end of execute_instruction to see the catch-all
sed -n '/fn execute_instruction/,/^    fn /p' crates/vm/src/frame.rs | tail -20