1 ; RUN: llc -verify-machineinstrs -mtriple=aarch64-none-linux-gnu -o - %s | FileCheck %s
3 ; Most important point here is that the promotion of the i1 works
4 ; correctly. Previously LLVM thought that i64 was the appropriate SetCC output,
5 ; which meant it proceded in two steps and produced an i64 -> i64 any_ext which
6 ; couldn't be selected and faulted.
8 ; It was expecting the smallest legal promotion of i1 to be the preferred SetCC
9 ; type, so we'll satisfy it (this actually arguably gives better code anyway,
10 ; with flag-manipulation operations allowed to use W-registers).
12 declare {i64, i1} @llvm.umul.with.overflow.i64(i64, i64)
14 define i64 @test_select(i64 %lhs, i64 %rhs) {
15 ; CHECK-LABEL: test_select:
17 %res = call {i64, i1} @llvm.umul.with.overflow.i64(i64 %lhs, i64 %rhs)
18 %flag = extractvalue {i64, i1} %res, 1
19 %retval = select i1 %flag, i64 %lhs, i64 %rhs