701040d48f
Counts the number of Basic Block successors when stats are enabled We want to track this metric for a project in which we analyze the effects of having LLVM Intermediate Representation (IR) code with a high number of branches. We plan to use these capabilities to learn how enabling memory safety features increases the branchiness in LLVM IR and further how it affects binary compilation time and the resulting binary performance.
71 lines
2.2 KiB
LLVM
71 lines
2.2 KiB
LLVM
; Testing with all of the below run lines that the pass gets added to the appropriate pipelines
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; REQUIRES: asserts
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; RUN: opt -stats -enable-detailed-function-properties -disable-output -passes=func-properties-stats < %s 2>&1 | FileCheck %s
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; RUN: opt -stats -enable-detailed-function-properties -disable-output -passes='thinlto<O3>'< %s 2>&1 | FileCheck %s
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; RUN: opt -stats -enable-detailed-function-properties -disable-output -passes='thinlto-pre-link<O2>' < %s 2>&1 | FileCheck %s
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; RUN: opt -stats -enable-detailed-function-properties -disable-output -passes='lto<O1>' < %s 2>&1 | FileCheck %s
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; RUN: opt -stats -enable-detailed-function-properties -disable-output -O3 < %s 2>&1 | FileCheck %s
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; RUN: opt -stats -enable-detailed-function-properties -disable-output -O0 < %s 2>&1 | FileCheck %s
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; CHECK-DAG: 10 func-properties-stats - Number of basic blocks
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; CHECK-DAG: 8 func-properties-stats - Number of branch instructions
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; CHECK-DAG: 10 func-properties-stats - Number of branch successors
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; CHECK-DAG: 2 func-properties-stats - Number of conditional branch instructions
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; CHECK-DAG: 6 func-properties-stats - Number of unconditional branch instructions
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; CHECK-DAG: 18 func-properties-stats - Number of instructions (of all types)
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; CHECK-DAG: 14 func-properties-stats - Number of basic block successors
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; CHECK-DAG: 1 func-properties-stats - Number of switch instructions
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; CHECK-DAG: 4 func-properties-stats - Number of switch successors
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define void @foo(i32 %i, i32 %j, i32 %n) {
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entry:
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%cmp = icmp slt i32 %i, %j
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br i1 %cmp, label %if.then, label %if.end
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if.then:
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call void @f()
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br label %if.end
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if.end:
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switch i32 %i, label %sw.default [
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i32 1, label %sw.bb
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i32 2, label %sw.bb1
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i32 3, label %sw.bb1
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]
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sw.bb:
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call void @g()
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br label %sw.epilog
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sw.bb1:
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call void @h()
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br label %sw.epilog
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sw.default:
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call void @k()
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br label %sw.epilog
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sw.epilog:
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%cmp2 = icmp sgt i32 %i, %n
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br i1 %cmp2, label %if.then3, label %if.else
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if.then3:
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call void @l()
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br label %if.end4
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if.else:
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call void @m()
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br label %if.end4
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if.end4:
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ret void
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}
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declare void @f()
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declare void @g()
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declare void @h()
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declare void @k()
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declare void @l()
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declare void @m()
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