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Add bswap patterns

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76061 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2009-07-16 14:34:52 +00:00
parent 21ddf779bf
commit 6ff3f2c710
2 changed files with 66 additions and 0 deletions
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18
lib/Target/SystemZ/SystemZInstrInfo.td
View File

@ -432,6 +432,24 @@ def MOV128r0_even : Pseudo<(outs GR128:$dst), (ins GR128:$src),
[]>;
}
// Byte swaps
def BSWAP32rr : Pseudo<(outs GR32:$dst), (ins GR32:$src),
"lrvr\t{$dst, $src}",
[(set GR32:$dst, (bswap GR32:$src))]>;
def BSWAP64rr : Pseudo<(outs GR64:$dst), (ins GR64:$src),
"lrvgr\t{$dst, $src}",
[(set GR64:$dst, (bswap GR64:$src))]>;
def BSWAP16rm : Pseudo<(outs GR32:$dst), (ins rriaddr:$src),
"lrvh\t{$dst, $src}",
[(set GR32:$dst, (bswap (extloadi32i16 rriaddr:$src)))]>;
def BSWAP32rm : Pseudo<(outs GR32:$dst), (ins rriaddr:$src),
"lrv\t{$dst, $src}",
[(set GR32:$dst, (bswap (load rriaddr:$src)))]>;
def BSWAP64rm : Pseudo<(outs GR64:$dst), (ins rriaddr:$src),
"lrvg\t{$dst, $src}",
[(set GR64:$dst, (bswap (load rriaddr:$src)))]>;
//===----------------------------------------------------------------------===//
// Arithmetic Instructions

48
test/CodeGen/SystemZ/11-BSwap.ll Normal file
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@ -0,0 +1,48 @@
; RUN: llvm-as < %s | llc | grep lrvr | count 2
; RUN: llvm-as < %s | llc | grep lrvgr | count 1
; RUN: llvm-as < %s | llc | grep lrvh | count 1
; RUN: llvm-as < %s | llc | grep {lrv.%} | count 1
; RUN: llvm-as < %s | llc | grep {lrvg.%} | count 1
target datalayout = "E-p:64:64:64-i8:8:16-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-a0:16:16"
target triple = "s390x-linux"
define i16 @foo(i16 zeroext %a) zeroext {
%res = tail call i16 @llvm.bswap.i16(i16 %a)
ret i16 %res
}
define i32 @foo2(i32 zeroext %a) zeroext {
%res = tail call i32 @llvm.bswap.i32(i32 %a)
ret i32 %res
}
define i64 @foo3(i64 %a) zeroext {
%res = tail call i64 @llvm.bswap.i64(i64 %a)
ret i64 %res
}
define i16 @foo4(i16* %b) zeroext {
%a = load i16* %b
%res = tail call i16 @llvm.bswap.i16(i16 %a)
ret i16 %res
}
define i32 @foo5(i32* %b) zeroext {
%a = load i32* %b
%res = tail call i32 @llvm.bswap.i32(i32 %a)
ret i32 %res
}
define i64 @foo6(i64* %b) {
%a = load i64* %b
%res = tail call i64 @llvm.bswap.i64(i64 %a)
ret i64 %res
}
declare i16 @llvm.bswap.i16(i16) nounwind readnone
declare i32 @llvm.bswap.i32(i32) nounwind readnone
declare i64 @llvm.bswap.i64(i64) nounwind readnone