Alexander Medvednikov
49cb1fea28
`int` is 64 bits wide on amd64, so the `r` constraints bind 64-bit registers, and `mov eax, a` reached the assembler as `mov %rax, %eax`. tcc accepted it, but gcc and clang reject the operand size mismatch (`build_examples_clang` failed on examples/asm.v).
20 lines
276 B
V
20 lines
276 B
V
// vtest build: !msvc
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fn main() {
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a := 100
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b := 20
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mut c := 0
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$if amd64 {
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asm amd64 {
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mov rax, a
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add rax, b
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mov c, rax
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; =r (c) // output
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; r (a) // input
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r (b)
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}
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}
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println('a: ${a}') // 100
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println('b: ${b}') // 20
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println('c: ${c}') // 120
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}
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