23 lines
672 B
LLVM
23 lines
672 B
LLVM
|
; RUN: llc -mattr=avr6 < %s -march=avr | FileCheck %s
|
||
|
|
|
||
|
|
define i1 @unsigned_multiplication_did_overflow(i8, i8) unnamed_addr {
|
||
|
|
; CHECK-LABEL: unsigned_multiplication_did_overflow:
|
||
|
|
entry-block:
|
||
|
|
%2 = tail call { i8, i1 } @llvm.umul.with.overflow.i8(i8 %0, i8 %1)
|
||
|
|
%3 = extractvalue { i8, i1 } %2, 1
|
||
|
|
ret i1 %3
|
||
|
|
|
||
|
|
; Multiply, return if the high byte is zero
|
||
|
|
;
|
||
|
|
; CHECK: mul r{{[0-9]+}}, r{{[0-9]+}}
|
||
|
|
; CHECK: mov [[HIGH:r[0-9]+]], r1
|
||
|
|
; CHECK: ldi [[RET:r[0-9]+]], 1
|
||
|
|
; CHECK: cpi {{.*}}[[HIGH]], 0
|
||
|
|
; CHECK: brne [[LABEL:.LBB[_0-9]+]]
|
||
|
|
; CHECK: ldi {{.*}}[[RET]], 0
|
||
|
|
; CHECK: {{.*}}[[LABEL]]
|
||
|
|
; CHECK: ret
|
||
|
|
}
|
||
|
|
|
||
|
|
declare { i8, i1 } @llvm.umul.with.overflow.i8(i8, i8)
|