; RUN: opt -S -Oz %s | FileCheck %s | |
@a = global i32 4 | |
define i1 @inner() { | |
%a1 = load volatile i32, i32* @a | |
%x1 = add i32 %a1, %a1 | |
%c = icmp eq i32 %x1, 0 | |
; Here are enough instructions to prevent inlining, but because they are used | |
; only by the @llvm.assume intrinsic, they're free (and, thus, inlining will | |
; still happen). | |
%a2 = mul i32 %a1, %a1 | |
%a3 = sub i32 %a1, 5 | |
%a4 = udiv i32 %a3, -13 | |
%a5 = mul i32 %a4, %a4 | |
%a6 = add i32 %a5, %x1 | |
%ca = icmp sgt i32 %a6, -7 | |
tail call void @llvm.assume(i1 %ca) | |
ret i1 %c | |
} | |
; @inner() should be inlined for -Oz. | |
; CHECK-NOT: call i1 @inner | |
define i1 @outer() optsize { | |
%r = call i1 @inner() | |
ret i1 %r | |
} | |
declare void @llvm.assume(i1) nounwind | |