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Use target independent COPY instructions for the fake fextend and fround 

operations in x87 code.

llvm-svn: 108098
This commit is contained in:
Jakob Stoklund Olesen 2010-07-11 18:19:39 +00:00
parent 7c1392a765
commit f6c7d7fb3f
1 changed files with 6 additions and 6 deletions
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12
llvm/lib/Target/X86/X86InstrFPStack.td
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@ -680,19 +680,19 @@ def : Pat<(X86fildflag addr:$src, i64), (ILD_Fp64m64 addr:$src)>;
// FP extensions map onto simple pseudo-value conversions if they are to/from
// the FP stack.
def : Pat<(f64 (fextend RFP32:$src)), (MOV_Fp3264 RFP32:$src)>,
def : Pat<(f64 (fextend RFP32:$src)), (COPY_TO_REGCLASS RFP32:$src, RFP64)>,
Requires<[FPStackf32]>;
def : Pat<(f80 (fextend RFP32:$src)), (MOV_Fp3280 RFP32:$src)>,
def : Pat<(f80 (fextend RFP32:$src)), (COPY_TO_REGCLASS RFP32:$src, RFP80)>,
Requires<[FPStackf32]>;
def : Pat<(f80 (fextend RFP64:$src)), (MOV_Fp6480 RFP64:$src)>,
def : Pat<(f80 (fextend RFP64:$src)), (COPY_TO_REGCLASS RFP64:$src, RFP80)>,
Requires<[FPStackf64]>;
// FP truncations map onto simple pseudo-value conversions if they are to/from
// the FP stack. We have validated that only value-preserving truncations make
// it through isel.
def : Pat<(f32 (fround RFP64:$src)), (MOV_Fp6432 RFP64:$src)>,
def : Pat<(f32 (fround RFP64:$src)), (COPY_TO_REGCLASS RFP64:$src, RFP32)>,
Requires<[FPStackf32]>;
def : Pat<(f32 (fround RFP80:$src)), (MOV_Fp8032 RFP80:$src)>,
def : Pat<(f32 (fround RFP80:$src)), (COPY_TO_REGCLASS RFP80:$src, RFP32)>,
Requires<[FPStackf32]>;
def : Pat<(f64 (fround RFP80:$src)), (MOV_Fp8064 RFP80:$src)>,
def : Pat<(f64 (fround RFP80:$src)), (COPY_TO_REGCLASS RFP80:$src, RFP64)>,
Requires<[FPStackf64]>;