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[SystemZ] Use "let Predicates =" for blocks of new instructions

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...instead of a separate Requires for each one.  This style was already
used in some places and seems more compact.

No behavioral change intended.

llvm-svn: 204452
This commit is contained in:
Richard Sandiford 2014-03-21 11:04:54 +00:00
parent 2e23c744a5
commit 0d4d61c9d1
2 changed files with 15 additions and 18 deletions
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15
lib/Target/SystemZ/SystemZInstrFP.td
View File

@ -258,15 +258,6 @@ def FIEBR : UnaryRRF<"fieb", 0xB357, FP32, FP32>;
def FIDBR : UnaryRRF<"fidb", 0xB35F, FP64, FP64>;
def FIXBR : UnaryRRF<"fixb", 0xB347, FP128, FP128>;
// Extended forms of the previous three instructions. M4 can be set to 4
// to suppress detection of inexact conditions.
def FIEBRA : UnaryRRF4<"fiebra", 0xB357, FP32, FP32>,
Requires<[FeatureFPExtension]>;
def FIDBRA : UnaryRRF4<"fidbra", 0xB35F, FP64, FP64>,
Requires<[FeatureFPExtension]>;
def FIXBRA : UnaryRRF4<"fixbra", 0xB347, FP128, FP128>,
Requires<[FeatureFPExtension]>;
// frint rounds according to the current mode (modifier 0) and detects
// inexact conditions.
def : Pat<(frint FP32:$src), (FIEBR 0, FP32:$src)>;
@ -274,6 +265,12 @@ def : Pat<(frint FP64:$src), (FIDBR 0, FP64:$src)>;
def : Pat<(frint FP128:$src), (FIXBR 0, FP128:$src)>;
let Predicates = [FeatureFPExtension] in {
// Extended forms of the FIxBR instructions. M4 can be set to 4
// to suppress detection of inexact conditions.
def FIEBRA : UnaryRRF4<"fiebra", 0xB357, FP32, FP32>;
def FIDBRA : UnaryRRF4<"fidbra", 0xB35F, FP64, FP64>;
def FIXBRA : UnaryRRF4<"fixbra", 0xB347, FP128, FP128>;
// fnearbyint is like frint but does not detect inexact conditions.
def : Pat<(fnearbyint FP32:$src), (FIEBRA 0, FP32:$src, 4)>;
def : Pat<(fnearbyint FP64:$src), (FIDBRA 0, FP64:$src, 4)>;

18
lib/Target/SystemZ/SystemZInstrInfo.td
View File

@ -1049,15 +1049,15 @@ let Defs = [CC] in {
// Forms of RISBG that only affect one word of the destination register.
// They do not set CC.
def RISBMux : RotateSelectRIEfPseudo<GRX32, GRX32>, Requires<[FeatureHighWord]>;
def RISBLL : RotateSelectAliasRIEf<GR32, GR32>, Requires<[FeatureHighWord]>;
def RISBLH : RotateSelectAliasRIEf<GR32, GRH32>, Requires<[FeatureHighWord]>;
def RISBHL : RotateSelectAliasRIEf<GRH32, GR32>, Requires<[FeatureHighWord]>;
def RISBHH : RotateSelectAliasRIEf<GRH32, GRH32>, Requires<[FeatureHighWord]>;
def RISBLG : RotateSelectRIEf<"risblg", 0xEC51, GR32, GR64>,
Requires<[FeatureHighWord]>;
def RISBHG : RotateSelectRIEf<"risbhg", 0xEC5D, GRH32, GR64>,
Requires<[FeatureHighWord]>;
let Predicates = [FeatureHighWord] in {
def RISBMux : RotateSelectRIEfPseudo<GRX32, GRX32>;
def RISBLL : RotateSelectAliasRIEf<GR32, GR32>;
def RISBLH : RotateSelectAliasRIEf<GR32, GRH32>;
def RISBHL : RotateSelectAliasRIEf<GRH32, GR32>;
def RISBHH : RotateSelectAliasRIEf<GRH32, GRH32>;
def RISBLG : RotateSelectRIEf<"risblg", 0xEC51, GR32, GR64>;
def RISBHG : RotateSelectRIEf<"risbhg", 0xEC5D, GRH32, GR64>;
}
// Rotate second operand left and perform a logical operation with selected
// bits of the first operand. The CC result only describes the selected bits,