1 ; RUN: opt -S -Oz %s | FileCheck %s 2 3 @a = global i32 4 4 5 define i32 @inner() { 6 %a1 = load volatile i32, i32* @a 7 8 ; Here are enough instructions to prevent inlining, but because they are used 9 ; only by the @llvm.assume intrinsic, they're free (and, thus, inlining will 10 ; still happen). 11 %a2 = mul i32 %a1, %a1 12 %a3 = sub i32 %a1, 5 13 %a4 = udiv i32 %a3, -13 14 %a5 = mul i32 %a4, %a4 15 %a6 = add i32 %a5, %a5 16 %ca = icmp sgt i32 %a6, -7 17 tail call void @llvm.assume(i1 %ca) 18 19 ret i32 %a1 20 } 21 22 ; @inner() should be inlined for -Oz. 23 ; CHECK-NOT: call i1 @inner 24 define i32 @outer() optsize { 25 %r = call i32 @inner() 26 ret i32 %r 27 } 28 29 declare void @llvm.assume(i1) nounwind 30 31
