9ef1d37ffb
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.
28 lines
699 B
LLVM
28 lines
699 B
LLVM
; RUN: llc -mattr=avr6,sram < %s -mtriple=avr | FileCheck %s
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; This file tests whether the compiler correctly works with the r1 register,
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; clearing it when needed.
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; Test regular use of r1 as a zero register.
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; CHECK-LABEL: store8zero:
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; CHECK: st {{[XYZ]}}, r1
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; CHECK-NEXT: mov r24, r1
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; CHECK-NEXT: ret
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define i8 @store8zero(ptr %x) {
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store i8 0, ptr %x
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ret i8 0
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}
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; Test that mulitplication instructions (mul, muls, etc) clobber r1 and require
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; a "clr r1" instruction.
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; CHECK-LABEL: mul:
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; CHECK: muls
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; CHECK-NEXT: clr r1
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; CHECK-NEXT: st {{[XYZ]}}, r0
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; CHECK-NEXT: ret
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define void @mul(ptr %ptr, i8 %n) {
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%result = mul i8 %n, 3
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store i8 %result, ptr %ptr
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ret void
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}
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