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| author | Bob Wilson <bob.wilson@apple.com> | 2011-04-19 18:11:36 +0000 |
|---|---|---|
| committer | Bob Wilson <bob.wilson@apple.com> | 2011-04-19 18:11:36 +0000 |
| commit | 11334dbd66581afb66bf17d07d970ca41265855e (patch) | |
| tree | f8a4db69447b927f203caff329e427eab9bef9e1 /lib/Target/ARM/ARMScheduleA9.td | |
| parent | 3762046dbfbf17b0c21804cce39f02b2dce05ff9 (diff) | |
| download | external_llvm-11334dbd66581afb66bf17d07d970ca41265855e.zip external_llvm-11334dbd66581afb66bf17d07d970ca41265855e.tar.gz external_llvm-11334dbd66581afb66bf17d07d970ca41265855e.tar.bz2 | |
Improvements for the Cortex-A9 scheduling itineraries.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129770 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/ARMScheduleA9.td')
| -rw-r--r-- | lib/Target/ARM/ARMScheduleA9.td | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/lib/Target/ARM/ARMScheduleA9.td b/lib/Target/ARM/ARMScheduleA9.td index 6714be0..49fedf6 100644 --- a/lib/Target/ARM/ARMScheduleA9.td +++ b/lib/Target/ARM/ARMScheduleA9.td @@ -656,19 +656,19 @@ def CortexA9Itineraries : ProcessorItineraries< [1, 1, 1]>, // // Single-precision to Integer Move + // + // On A9 move-from-VFP is free to issue with no stall if other VFP + // operations are in flight. I assume it still can't dual-issue though. InstrItinData<IIC_fpMOVSI, [InstrStage<1, [A9_Issue0, A9_Issue1], 0>, - InstrStage<1, [A9_MUX0], 0>, - InstrStage<1, [A9_DRegsVFP], 0, Required>, - InstrStage<2, [A9_DRegsN], 0, Reserved>, - InstrStage<1, [A9_NPipe]>], + InstrStage<1, [A9_MUX0], 0>], [2, 1]>, // // Double-precision to Integer Move + // + // On A9 move-from-VFP is free to issue with no stall if other VFP + // operations are in flight. I assume it still can't dual-issue though. InstrItinData<IIC_fpMOVDI, [InstrStage<1, [A9_Issue0, A9_Issue1], 0>, - InstrStage<1, [A9_MUX0], 0>, - InstrStage<1, [A9_DRegsVFP], 0, Required>, - InstrStage<2, [A9_DRegsN], 0, Reserved>, - InstrStage<1, [A9_NPipe]>], + InstrStage<1, [A9_MUX0], 0>], [2, 1, 1]>, // // Single-precision FP Load @@ -691,20 +691,22 @@ def CortexA9Itineraries : ProcessorItineraries< [2, 1]>, // // FP Load Multiple + // FIXME: assumes 2 doubles which requires 2 LS cycles. InstrItinData<IIC_fpLoad_m, [InstrStage<1, [A9_Issue0, A9_Issue1], 0>, InstrStage<1, [A9_MUX0], 0>, InstrStage<1, [A9_DRegsVFP], 0, Required>, InstrStage<2, [A9_DRegsN], 0, Reserved>, InstrStage<1, [A9_NPipe], 0>, - InstrStage<1, [A9_LSUnit]>], [1, 1, 1, 1]>, + InstrStage<2, [A9_LSUnit]>], [1, 1, 1, 1]>, // // FP Load Multiple + update + // FIXME: assumes 2 doubles which requires 2 LS cycles. InstrItinData<IIC_fpLoad_mu,[InstrStage<1, [A9_Issue0, A9_Issue1], 0>, InstrStage<1, [A9_MUX0], 0>, InstrStage<1, [A9_DRegsVFP], 0, Required>, InstrStage<2, [A9_DRegsN], 0, Reserved>, InstrStage<1, [A9_NPipe], 0>, - InstrStage<1, [A9_LSUnit]>], [2, 1, 1, 1]>, + InstrStage<2, [A9_LSUnit]>], [2, 1, 1, 1]>, // // Single-precision FP Store InstrItinData<IIC_fpStore32,[InstrStage<1, [A9_Issue0, A9_Issue1], 0>, @@ -725,20 +727,22 @@ def CortexA9Itineraries : ProcessorItineraries< [1, 1]>, // // FP Store Multiple + // FIXME: assumes 2 doubles which requires 2 LS cycles. InstrItinData<IIC_fpStore_m,[InstrStage<1, [A9_Issue0, A9_Issue1], 0>, InstrStage<1, [A9_MUX0], 0>, InstrStage<1, [A9_DRegsVFP], 0, Required>, InstrStage<2, [A9_DRegsN], 0, Reserved>, InstrStage<1, [A9_NPipe], 0>, - InstrStage<1, [A9_LSUnit]>], [1, 1, 1, 1]>, + InstrStage<2, [A9_LSUnit]>], [1, 1, 1, 1]>, // // FP Store Multiple + update + // FIXME: assumes 2 doubles which requires 2 LS cycles. InstrItinData<IIC_fpStore_mu,[InstrStage<1, [A9_Issue0, A9_Issue1], 0>, InstrStage<1, [A9_MUX0], 0>, InstrStage<1, [A9_DRegsVFP], 0, Required>, InstrStage<2, [A9_DRegsN], 0, Reserved>, InstrStage<1, [A9_NPipe], 0>, - InstrStage<1, [A9_LSUnit]>], [2, 1, 1, 1]>, + InstrStage<2, [A9_LSUnit]>], [2, 1, 1, 1]>, // NEON // VLD1 InstrItinData<IIC_VLD1, [InstrStage<1, [A9_Issue0, A9_Issue1], 0>, |