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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
; RUN: llc < %s -mtriple=avr -mattr=+movw | FileCheck %s --check-prefix=MOVW
; RUN: llc < %s -mtriple=avr -mattr=-movw | FileCheck %s --check-prefix=NOMOVW
define i16 @food(ptr %this) {
; MOVW-LABEL: food:
; MOVW: ; %bb.0: ; %entry
; MOVW-NEXT: movw r30, r24
; MOVW-NEXT: ldd r24, Z+25
; MOVW-NEXT: clr r25
; MOVW-NEXT: ldd r18, Z+26
; MOVW-NEXT: clr r19
; MOVW-NEXT: sub r24, r18
; MOVW-NEXT: sbc r25, r19
; MOVW-NEXT: andi r24, 63
; MOVW-NEXT: andi r25, 0
; MOVW-NEXT: ret
;
; NOMOVW-LABEL: food:
; NOMOVW: ; %bb.0: ; %entry
; NOMOVW-NEXT: mov r30, r24
; NOMOVW-NEXT: mov r31, r25
; NOMOVW-NEXT: ldd r24, Z+25
; NOMOVW-NEXT: clr r25
; NOMOVW-NEXT: ldd r18, Z+26
; NOMOVW-NEXT: clr r19
; NOMOVW-NEXT: sub r24, r18
; NOMOVW-NEXT: sbc r25, r19
; NOMOVW-NEXT: andi r24, 63
; NOMOVW-NEXT: andi r25, 0
; NOMOVW-NEXT: ret
entry:
%_rx_buffer_head = getelementptr inbounds nuw i8, ptr %this, i16 25
%0 = load volatile i8, ptr %_rx_buffer_head
%conv = zext i8 %0 to i16
%_rx_buffer_tail = getelementptr inbounds nuw i8, ptr %this, i16 26
%1 = load volatile i8, ptr %_rx_buffer_tail
%conv2 = zext i8 %1 to i16
%sub = sub nsw i16 %conv, %conv2
%rem = and i16 %sub, 63
ret i16 %rem
}
define i16 @fooe(i8 %a) {
; MOVW-LABEL: fooe:
; MOVW: ; %bb.0:
; MOVW-NEXT: clr r25
; MOVW-NEXT: subi r24, 0
; MOVW-NEXT: sbci r25, 1
; MOVW-NEXT: andi r24, 1
; MOVW-NEXT: andi r25, 0
; MOVW-NEXT: ret
;
; NOMOVW-LABEL: fooe:
; NOMOVW: ; %bb.0:
; NOMOVW-NEXT: clr r25
; NOMOVW-NEXT: subi r24, 0
; NOMOVW-NEXT: sbci r25, 1
; NOMOVW-NEXT: andi r24, 1
; NOMOVW-NEXT: andi r25, 0
; NOMOVW-NEXT: ret
%1 = zext i8 %a to i16
%2 = sub i16 %1, 256
%3 = and i16 %2, 1
ret i16 %3
}
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