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TheRock/compiler/amd-llvm/llvm/test/Transforms/FunctionSpecialization/recursive-penalty.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

65 lines
1.5 KiB
LLVM

; REQUIRES: asserts
; RUN: opt -passes="ipsccp<func-spec>,inline,instcombine,simplifycfg" -S \
; RUN: -funcspec-min-function-size=23 -funcspec-max-iters=100 \
; RUN: -debug-only=function-specialization < %s 2>&1 | FileCheck %s
; Make sure the number of specializations created are not
; linear to the number of iterations (funcspec-max-iters).
; CHECK: FnSpecialization: Created 4 specializations in module
@Global = internal constant i32 1, align 4
define internal void @recursiveFunc(ptr readonly %arg) {
%temp = alloca i32, align 4
%arg.load = load i32, ptr %arg, align 4
%arg.cmp = icmp slt i32 %arg.load, 10000
br i1 %arg.cmp, label %loop1, label %ret.block
loop1:
br label %loop2
loop2:
br label %loop3
loop3:
br label %loop4
loop4:
br label %block6
block6:
call void @print_val(i32 %arg.load)
%arg.add = add nsw i32 %arg.load, 1
store i32 %arg.add, ptr %temp, align 4
call void @recursiveFunc(ptr %temp)
br label %loop4.end
loop4.end:
%exit_cond1 = call i1 @exit_cond()
br i1 %exit_cond1, label %loop4, label %loop3.end
loop3.end:
%exit_cond2 = call i1 @exit_cond()
br i1 %exit_cond2, label %loop3, label %loop2.end
loop2.end:
%exit_cond3 = call i1 @exit_cond()
br i1 %exit_cond3, label %loop2, label %loop1.end
loop1.end:
%exit_cond4 = call i1 @exit_cond()
br i1 %exit_cond4, label %loop1, label %ret.block
ret.block:
ret void
}
define i32 @main() {
call void @recursiveFunc(ptr @Global)
ret i32 0
}
declare dso_local void @print_val(i32)
declare dso_local i1 @exit_cond()