1; RUN: llc < %s -mtriple=arm64-eabi -verify-machineinstrs | FileCheck %s 2 3; We used to not mark NZCV as being used in the continuation basic-block 4; when lowering a 128-bit "select" to branches. This meant a subsequent use 5; of the same flags gave an internal fault here. 6 7declare void @foo(fp128) 8 9define double @test_f128csel_flags(i32 %lhs, fp128 %a, fp128 %b, double %l, double %r) nounwind { 10; CHECK: test_f128csel_flags 11 12 %tst = icmp ne i32 %lhs, 42 13 %val = select i1 %tst, fp128 %a, fp128 %b 14; CHECK: cmp w0, #42 15; CHECK: b.eq {{.?LBB0}} 16 17 call void @foo(fp128 %val) 18 %retval = select i1 %tst, double %l, double %r 19 20 ; It's also reasonably important that the actual fcsel comes before the 21 ; function call since bl may corrupt NZCV. We were doing the right thing anyway, 22 ; but just as well test it while we're here. 23; CHECK: fcsel {{d[0-9]+}}, {{d[0-9]+}}, {{d[0-9]+}}, ne 24; CHECK: bl {{_?foo}} 25 26 ret double %retval 27} 28