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Use MVN for ~t2_so_imm immediates.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74223 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Goodwin 2009-06-25 23:11:21 +00:00
parent 27fcfe1364
commit 0919a916bf
2 changed files with 30 additions and 0 deletions
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3
lib/Target/ARM/ARMInstrThumb2.td
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@ -434,6 +434,9 @@ def : Thumb2Pat<(or GPR:$src, t2_so_imm_not:$imm),
defm t2MVN : T2I_un_irs <"mvn", UnOpFrag<(not node:$Src)>, 1, 1>;
def : Thumb2Pat<(t2_so_imm_not:$src),
(t2MVNi t2_so_imm_not:$src)>;
// A8.6.17 BFC - Bitfield clear
// FIXME: Also available in ARM mode.
let Constraints = "$src = $dst" in

27
test/CodeGen/Thumb2/thumb2-mvn.ll Normal file
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@ -0,0 +1,27 @@
; RUN: llvm-as < %s | llc | grep {mvn\\W*r\[0-9\],\\W*#\[0-9\]*} | grep {#187\\|#11141290\\|#3422604288\\|#1114112} | Count 4
target triple = "thumbv7-apple-darwin"
; 0x000000bb = 187
define i32 @f1(i32 %a) {
%tmp = xor i32 4294967295, 187
ret i32 %tmp
}
; 0x00aa00aa = 11141290
define i32 @f2(i32 %a) {
%tmp = xor i32 4294967295, 11141290
ret i32 %tmp
}
; 0xcc00cc00 = 3422604288
define i32 @f3(i32 %a) {
%tmp = xor i32 4294967295, 3422604288
ret i32 %tmp
}
; 0x00110000 = 1114112
define i32 @f5(i32 %a) {
%tmp = xor i32 4294967295, 1114112
ret i32 %tmp
}