You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
23 lines
904 B
23 lines
904 B
; RUN: llc -verify-machineinstrs -mtriple=aarch64-none-linux-gnu -o - %s | FileCheck %s
|
|
|
|
; Most important point here is that the promotion of the i1 works
|
|
; correctly. Previously LLVM thought that i64 was the appropriate SetCC output,
|
|
; which meant it proceded in two steps and produced an i64 -> i64 any_ext which
|
|
; couldn't be selected and faulted.
|
|
|
|
; It was expecting the smallest legal promotion of i1 to be the preferred SetCC
|
|
; type, so we'll satisfy it (this actually arguably gives better code anyway,
|
|
; with flag-manipulation operations allowed to use W-registers).
|
|
|
|
declare {i64, i1} @llvm.umul.with.overflow.i64(i64, i64)
|
|
|
|
define i64 @test_select(i64 %lhs, i64 %rhs) {
|
|
; CHECK-LABEL: test_select:
|
|
|
|
%res = call {i64, i1} @llvm.umul.with.overflow.i64(i64 %lhs, i64 %rhs)
|
|
%flag = extractvalue {i64, i1} %res, 1
|
|
%retval = select i1 %flag, i64 %lhs, i64 %rhs
|
|
ret i64 %retval
|
|
; CHECK: ret
|
|
}
|