llvm-project/llvm/test/CodeGen/AVR/rust-bug-98167.ll
Fangrui Song 9ef1d37ffb [AVR,test] Change llc -march= to -mtriple=
Similar to 806761a7629df268c8aed49657aeccffa6bca449

-mtriple= specifies the full target triple while -march= merely sets the
architecture part of the default target triple, leaving a target triple which
may not make sense.

Therefore, -march= is error-prone and not recommended for tests without a target
triple. The issue has been benign as we recognize avr-apple-darwin as ELF instead
of rejecting it outrightly.
2024-12-15 10:26:33 -08:00

23 lines
577 B
LLVM

; RUN: llc < %s -mtriple=avr | FileCheck %s
; The bug can be found here:
; https://github.com/rust-lang/rust/issues/98167
;
; In this test, `extractvalue` + `call` generate a copy with overlapping
; registers (`$r25r24 = COPY $r24r23`) that used to be expanded incorrectly.
define void @main() {
; CHECK-LABEL: main:
; CHECK: rcall foo
; CHECK-NEXT: mov r25, r24
; CHECK-NEXT: mov r24, r23
; CHECK-NEXT: rcall bar
%1 = call { i8, i16 } @foo()
%2 = extractvalue { i8, i16 } %1, 1
call void @bar(i16 %2)
ret void
}
declare { i8, i16 } @foo()
declare void @bar(i16 %0)