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Implemented metric that gets biggest function's size (#182632)

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This metric gets the size of the biggest function.
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Iñaki V Arrechea 2026-02-23 18:06:53 -06:00 committed by GitHub
parent 9146da3a7b
commit a8f3c97d3a
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GPG Key ID: B5690EEEBB952194
2 changed files with 15 additions and 6 deletions
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7
llvm/lib/Analysis/InstCount.cpp
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@ -24,6 +24,8 @@ using namespace llvm;
STATISTIC(TotalInsts, "Number of instructions (of all types)");
STATISTIC(TotalBlocks, "Number of basic blocks");
STATISTIC(TotalFuncs, "Number of non-external functions");
STATISTIC(LargestFunctionSize,
"Largest number of instructions in a single function");
#define HANDLE_INST(N, OPCODE, CLASS) \
STATISTIC(Num##OPCODE##Inst, "Number of " #OPCODE " insts");
@ -34,7 +36,10 @@ namespace {
class InstCount : public InstVisitor<InstCount> {
friend class InstVisitor<InstCount>;
void visitFunction(Function &F) { ++TotalFuncs; }
void visitFunction(Function &F) {
++TotalFuncs;
LargestFunctionSize.updateMax(F.getInstructionCount());
}
void visitBasicBlock(BasicBlock &BB) { ++TotalBlocks; }
#define HANDLE_INST(N, OPCODE, CLASS) \

14
llvm/test/Other/instcount.ll → llvm/test/Analysis/InstCount/instcount.ll
View File

@ -7,15 +7,15 @@
; RUN: opt -stats -O3 -disable-output < %s 2>&1 | FileCheck %s
; RUN: opt -stats -O0 -disable-output < %s 2>&1 | FileCheck %s
; CHECK-DAG: 18 instcount - Largest number of instructions in a single function
; CHECK-DAG: 8 instcount - Number of Br insts
; CHECK-DAG: 6 instcount - Number of Call insts
; CHECK-DAG: 2 instcount - Number of ICmp insts
; CHECK-DAG: 1 instcount - Number of Ret insts
; CHECK-DAG: 2 instcount - Number of Ret insts
; CHECK-DAG: 1 instcount - Number of Switch insts
; CHECK-DAG: 10 instcount - Number of basic blocks
; CHECK-DAG: 1 instcount - Number of non-external functions
; CHECK-DAG: 18 instcount - Number of instructions (of all types)
; CHECK-DAG: 11 instcount - Number of basic blocks
; CHECK-DAG: 2 instcount - Number of non-external functions
; CHECK-DAG: 19 instcount - Number of instructions (of all types)
define void @foo(i32 %i, i32 %j, i32 %n) {
entry:
@ -61,6 +61,10 @@ if.end4:
ret void
}
define void @woo() {
ret void
}
declare void @f()
declare void @g()
declare void @h()