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25 lines
589 B
LLVM
25 lines
589 B
LLVM
; bswap should be constant folded when it is passed a constant argument
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; RUN: llvm-upgrade < %s | llvm-as | llc -march=x86 | \
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; RUN: grep bswapl | count 3
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; RUN: llvm-upgrade < %s | llvm-as | llc -march=x86 | grep rolw | count 1
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declare ushort %llvm.bswap.i16(ushort)
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declare uint %llvm.bswap.i32(uint)
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declare ulong %llvm.bswap.i64(ulong)
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ushort %W(ushort %A) {
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%Z = call ushort %llvm.bswap.i16(ushort %A)
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ret ushort %Z
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}
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uint %X(uint %A) {
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%Z = call uint %llvm.bswap.i32(uint %A)
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ret uint %Z
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}
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ulong %Y(ulong %A) {
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%Z = call ulong %llvm.bswap.i64(ulong %A)
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ret ulong %Z
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}
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