Files
clang-p2996/llvm/test/Transforms/FunctionSpecialization/function-specialization-minsize2.ll
Alexandros Lamprineas 8136a0172b [FuncSpec] Make the Function Specializer part of the IPSCCP pass.
Reland 877a9f9abe since D138654 (parent)
has been fixed with 9ebaf4fef4 and with
8f1e11c5a7.

Differential Revision: https://reviews.llvm.org/D126455
2022-12-10 14:39:49 +00:00

45 lines
895 B
LLVM

; RUN: opt -passes=ipsccp -specialize-functions -func-specialization-size-threshold=3 -S < %s | FileCheck %s
; Checks for callsites that have been annotated with MinSize. No specialisation
; expected here:
;
; CHECK-NOT: @compute.1
; CHECK-NOT: @compute.2
define i64 @main(i64 %x, i1 %flag) {
entry:
br i1 %flag, label %plus, label %minus
plus:
%tmp0 = call i64 @compute(i64 %x, ptr @plus) #0
br label %merge
minus:
%tmp1 = call i64 @compute(i64 %x, ptr @minus) #0
br label %merge
merge:
%tmp2 = phi i64 [ %tmp0, %plus ], [ %tmp1, %minus]
ret i64 %tmp2
}
define internal i64 @compute(i64 %x, ptr %binop) {
entry:
%tmp0 = call i64 %binop(i64 %x)
ret i64 %tmp0
}
define internal i64 @plus(i64 %x) {
entry:
%tmp0 = add i64 %x, 1
ret i64 %tmp0
}
define internal i64 @minus(i64 %x) {
entry:
%tmp0 = sub i64 %x, 1
ret i64 %tmp0
}
attributes #0 = { minsize optsize }