2014-05-24 20:50:23 +08:00
|
|
|
; RUN: llc -mtriple=aarch64-none-linux-gnu -verify-machineinstrs -o - %s | FileCheck %s
|
2013-01-31 20:12:40 +08:00
|
|
|
|
|
|
|
|
; We used to not mark NZCV as being used in the continuation basic-block
|
|
|
|
|
; when lowering a 128-bit "select" to branches. This meant a subsequent use
|
|
|
|
|
; of the same flags gave an internal fault here.
|
|
|
|
|
|
|
|
|
|
declare void @foo(fp128)
|
|
|
|
|
|
|
|
|
|
define double @test_f128csel_flags(i32 %lhs, fp128 %a, fp128 %b) nounwind {
|
|
|
|
|
; CHECK: test_f128csel_flags
|
|
|
|
|
|
|
|
|
|
%tst = icmp ne i32 %lhs, 42
|
|
|
|
|
%val = select i1 %tst, fp128 %a, fp128 %b
|
|
|
|
|
; CHECK: cmp w0, #42
|
|
|
|
|
; CHECK: b.eq .LBB0
|
|
|
|
|
|
|
|
|
|
call void @foo(fp128 %val)
|
|
|
|
|
%retval = select i1 %tst, double 4.0, double 5.0
|
|
|
|
|
|
|
|
|
|
; It's also reasonably important that the actual fcsel comes before the
|
|
|
|
|
; function call since bl may corrupt NZCV. We were doing the right thing anyway,
|
|
|
|
|
; but just as well test it while we're here.
|
|
|
|
|
; CHECK: fcsel {{d[0-9]+}}, {{d[0-9]+}}, {{d[0-9]+}}, ne
|
|
|
|
|
; CHECK: bl foo
|
|
|
|
|
|
|
|
|
|
ret double %retval
|
|
|
|
|
}
|
