1; RUN: opt -S -passes=inline %s -debug-only=inline-cost 2>&1 | FileCheck %s 2; REQUIRES: asserts 3 4@a = global i32 4 5 6; Only the load and ret should be included in the instruction count, not 7; the instructions feeding the assume. 8; CHECK: Analyzing call of inner... 9; CHECK: NumInstructions: 2 10define i32 @inner(ptr %y) { 11 %a1 = load volatile i32, ptr @a 12 13 ; Because these instructions are used only by the @llvm.assume intrinsic, 14 ; they're free and should not be included in the instruction count when 15 ; computing the inline cost. 16 %a2 = mul i32 %a1, %a1 17 %a3 = sub i32 %a1, %a2 18 %a4 = udiv i32 %a3, -13 19 %a5 = mul i32 %a4, %a4 20 %a6 = add i32 %a5, %a5 21 %ca = icmp sgt i32 %a6, -7 22 %r = call i1 @llvm.type.test(ptr %y, metadata !0) 23 %ca2 = icmp eq i1 %ca, %r 24 tail call void @llvm.assume(i1 %ca2) 25 26 ret i32 %a1 27} 28 29; Only the ret should be included in the instruction count, the load and icmp 30; are both ephemeral. 31; CHECK: Analyzing call of inner2... 32; CHECK: NumInstructions: 1 33define void @inner2(ptr %y) { 34 %v = load i8, ptr %y 35 %c = icmp eq i8 %v, 42 36 call void @llvm.assume(i1 %c) 37 ret void 38} 39 40define i32 @outer(ptr %y) optsize { 41 %r = call i32 @inner(ptr %y) 42 call void @inner2(ptr %y) 43 ret i32 %r 44} 45 46declare void @llvm.assume(i1) nounwind 47declare i1 @llvm.type.test(ptr, metadata) nounwind readnone 48 49!0 = !{i32 0, !"typeid1"} 50