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https://github.com/c64scene-ar/llvm-6502.git
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22 lines
563 B
LLVM
22 lines
563 B
LLVM
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; The register allocator can commute two-address instructions to avoid
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; insertion of register-register copies.
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; Check that there are no register-register copies left.
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; RUN: llvm-as < %s | llc -march=x86 -x86-asm-syntax=intel | not grep 'mov %E.X, %E.X'
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%G = external global int
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declare void %ext(int)
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int %add_test(int %X, int %Y) {
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%Z = add int %X, %Y ;; Last use of Y, but not of X.
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store int %Z, int* %G
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ret int %X
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}
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int %xor_test(int %X, int %Y) {
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%Z = xor int %X, %Y ;; Last use of Y, but not of X.
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store int %Z, int* %G
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ret int %X
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}
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