source: icGREP/icgrep-devel/llvm-3.8.0.src/test/CodeGen/AArch64/setcc-takes-i32.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

File size: 904 bytes
Line 
1; RUN: llc -verify-machineinstrs -mtriple=aarch64-none-linux-gnu -o - %s | FileCheck %s
2
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.
7
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).
11
12declare {i64, i1} @llvm.umul.with.overflow.i64(i64, i64)
13
14define i64 @test_select(i64 %lhs, i64 %rhs) {
15; CHECK-LABEL: test_select:
16
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
20  ret i64 %retval
21; CHECK: ret
22}
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