29 lines
606 B
LLVM
29 lines
606 B
LLVM
; RUN: llc -mattr=mul,movw < %s -march=avr | FileCheck %s
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define i8 @mult8(i8 %a, i8 %b) {
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; CHECK-LABEL: mult8:
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; CHECK: muls r22, r24
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; CHECK: clr r1
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; CHECK: mov r24, r0
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%mul = mul i8 %b, %a
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ret i8 %mul
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}
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define i16 @mult16(i16 %a, i16 %b) {
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; CHECK-LABEL: mult16:
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; CHECK: muls r22, r25
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; CHECK: mov r18, r0
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; CHECK: mul r22, r24
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; CHECK: mov r19, r0
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; CHECK: mov r20, r1
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; CHECK: clr r1
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; CHECK: add r20, r18
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; CHECK: muls r23, r24
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; CHECK: clr r1
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; CHECK: mov r22, r0
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; CHECK: add r22, r20
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; :TODO: finish after reworking shift instructions
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%mul = mul nsw i16 %b, %a
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ret i16 %mul
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}
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