1; REQUIRES: asserts 2; RUN: opt -passes="ipsccp<func-spec>,inline,instcombine,simplifycfg" -S \ 3; RUN: -funcspec-min-function-size=23 -funcspec-max-iters=100 \ 4; RUN: -debug-only=function-specialization < %s 2>&1 | FileCheck %s 5 6; Make sure the number of specializations created are not 7; linear to the number of iterations (funcspec-max-iters). 8 9; CHECK: FnSpecialization: Created 4 specializations in module 10 11@Global = internal constant i32 1, align 4 12 13define internal void @recursiveFunc(ptr readonly %arg) { 14 %temp = alloca i32, align 4 15 %arg.load = load i32, ptr %arg, align 4 16 %arg.cmp = icmp slt i32 %arg.load, 10000 17 br i1 %arg.cmp, label %loop1, label %ret.block 18 19loop1: 20 br label %loop2 21 22loop2: 23 br label %loop3 24 25loop3: 26 br label %loop4 27 28loop4: 29 br label %block6 30 31block6: 32 call void @print_val(i32 %arg.load) 33 %arg.add = add nsw i32 %arg.load, 1 34 store i32 %arg.add, ptr %temp, align 4 35 call void @recursiveFunc(ptr %temp) 36 br label %loop4.end 37 38loop4.end: 39 %exit_cond1 = call i1 @exit_cond() 40 br i1 %exit_cond1, label %loop4, label %loop3.end 41 42loop3.end: 43 %exit_cond2 = call i1 @exit_cond() 44 br i1 %exit_cond2, label %loop3, label %loop2.end 45 46loop2.end: 47 %exit_cond3 = call i1 @exit_cond() 48 br i1 %exit_cond3, label %loop2, label %loop1.end 49 50loop1.end: 51 %exit_cond4 = call i1 @exit_cond() 52 br i1 %exit_cond4, label %loop1, label %ret.block 53 54ret.block: 55 ret void 56} 57 58define i32 @main() { 59 call void @recursiveFunc(ptr @Global) 60 ret i32 0 61} 62 63declare dso_local void @print_val(i32) 64declare dso_local i1 @exit_cond() 65