llvm-project/llvm/test/Transforms/Inline/inline-cold-callee.ll

40 lines
998 B
LLVM

; RUN: opt < %s -inline -inlinecold-threshold=0 -S | FileCheck %s
; This tests that a cold callee gets the (lower) inlinecold-threshold even without
; Cold hint and does not get inlined because the cost exceeds the inlinecold-threshold.
; A callee with identical body does gets inlined because cost fits within the
; inline-threshold
define i32 @callee1(i32 %x) !prof !1 {
%x1 = add i32 %x, 1
%x2 = add i32 %x1, 1
%x3 = add i32 %x2, 1
ret i32 %x3
}
define i32 @callee2(i32 %x) !prof !2 {
; CHECK-LABEL: @callee2(
%x1 = add i32 %x, 1
%x2 = add i32 %x1, 1
%x3 = add i32 %x2, 1
ret i32 %x3
}
define i32 @caller2(i32 %y1) !prof !2 {
; CHECK-LABEL: @caller2(
; CHECK: call i32 @callee2
; CHECK-NOT: call i32 @callee1
; CHECK: ret i32 %x3.i
%y2 = call i32 @callee2(i32 %y1)
%y3 = call i32 @callee1(i32 %y2)
ret i32 %y3
}
!llvm.module.flags = !{!0}
!0 = !{i32 1, !"MaxFunctionCount", i32 1000}
!1 = !{!"function_entry_count", i64 100}
!2 = !{!"function_entry_count", i64 1}