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bswap implementation

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25312 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nate Begeman
2006-01-14 03:14:10 +00:00
parent b69c190c26
commit d88fc03602
12 changed files with 119 additions and 2 deletions
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test/CodeGen/X86/bswap.ll
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; bswap should be constant folded when it is passed a constant argument
; RUN: llvm-as < %s | llc -march=x86 -enable-x86-dag-isel | grep bswapl | wc -l | grep 3 &&
; RUN: llvm-as < %s | llc -march=x86 -enable-x86-dag-isel | grep rolw | wc -l | grep 1
declare ushort %llvm.bswap.i16(ushort)
declare uint %llvm.bswap.i32(uint)
declare ulong %llvm.bswap.i64(ulong)
ushort %W(ushort %A) {
%Z = call ushort %llvm.bswap.i16(ushort %A)
ret ushort %Z
}
uint %X(uint %A) {
%Z = call uint %llvm.bswap.i32(uint %A)
ret uint %Z
}
ulong %Y(ulong %A) {
%Z = call ulong %llvm.bswap.i64(ulong %A)
ret ulong %Z
}