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| author | Dylan McKay <me@dylanmckay.io> | 2018-09-01 12:22:50 +0000 |
|---|---|---|
| committer | Dylan McKay <me@dylanmckay.io> | 2018-09-01 12:22:50 +0000 |
| commit | d11802438779edc773802b40dcfb3963eeca9f6e (patch) | |
| tree | b076dd3fed0abab7f4f01f9b66cbc26505b68eaf /llvm | |
| parent | 8b0f9d2e58f1cb0267ebed9eec3de6b54ba10a98 (diff) | |
| download | bcm5719-llvm-d11802438779edc773802b40dcfb3963eeca9f6e.tar.gz bcm5719-llvm-d11802438779edc773802b40dcfb3963eeca9f6e.zip | |
[AVR] Define the TST instruction as an alias of AND
The 'tst Rd' instruction is equivalent to 'and Rd, Rd'.
llvm-svn: 341276
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/Target/AVR/AVRInstrInfo.td | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/llvm/lib/Target/AVR/AVRInstrInfo.td b/llvm/lib/Target/AVR/AVRInstrInfo.td index 2cba2e80f4e..62f06f2bf77 100644 --- a/llvm/lib/Target/AVR/AVRInstrInfo.td +++ b/llvm/lib/Target/AVR/AVRInstrInfo.td @@ -730,15 +730,7 @@ Defs = [SREG] in // TST Rd // Test for zero of minus. // This operation is identical to a `Rd AND Rd`. -//def : InstAlias<"tst\t$rd", (ANDRdRr GPR8:$rd, GPR8:$rd), 1>; - -let Defs = [SREG] in -def TSTRd : FTST<0b0010, - 0b00, - (outs), - (ins GPR8:$rd), - "tst\t$rd", - [(AVRtst i8:$rd)]>; +def : InstAlias<"tst\t$rd", (ANDRdRr GPR8:$rd, GPR8:$rd)>; //===----------------------------------------------------------------------===// // Jump instructions @@ -2104,3 +2096,8 @@ def : Pat<(i8 (trunc (AVRlsr (AVRlsr (AVRlsr (AVRlsr (AVRlsr (AVRlsr (AVRlsr def : Pat<(shl i16:$src1, (i8 1)), (LSLWRd i16:$src1)>; +// Lowering of 'tst' node to 'TST' instruction. +// TST is an alias of AND Rd, Rd. +def : Pat<(AVRtst i8:$rd), + (ANDRdRr $rd, $rd)>; + |
