xref: /llvm-project/llvm/test/CodeGen/AVR/rust-bug-98167.ll (revision 9ef1d37ffb5f56a9b949a6307bbb16c2ea0130e3)
1; RUN: llc < %s -mtriple=avr | FileCheck %s
2
3; The bug can be found here:
4; https://github.com/rust-lang/rust/issues/98167
5;
6; In this test, `extractvalue` + `call` generate a copy with overlapping
7; registers (`$r25r24 = COPY $r24r23`) that used to be expanded incorrectly.
8
9define void @main() {
10; CHECK-LABEL: main:
11; CHECK: rcall foo
12; CHECK-NEXT: mov r25, r24
13; CHECK-NEXT: mov r24, r23
14; CHECK-NEXT: rcall bar
15  %1 = call { i8, i16 } @foo()
16  %2 = extractvalue { i8, i16 } %1, 1
17  call void @bar(i16 %2)
18  ret void
19}
20
21declare { i8, i16 } @foo()
22declare void @bar(i16 %0)
23