Add help support for -mcpu and -mattr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23222 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCSubtarget.cpp b/lib/Target/PowerPC/PPCSubtarget.cpp
index 0efc1c1..ca9d077 100644
--- a/lib/Target/PowerPC/PPCSubtarget.cpp
+++ b/lib/Target/PowerPC/PPCSubtarget.cpp
@@ -40,25 +40,31 @@
/// Sorted (by key) array of values for CPU subtype.
static const SubtargetFeatureKV PowerPCSubTypeKV[] = {
- { "601" , 0 },
- { "602" , 0 },
- { "603" , 0 },
- { "603e" , 0 },
- { "603ev" , 0 },
- { "604" , 0 },
- { "604e" , 0 },
- { "620" , 0 },
- { "7400" , PowerPCFeatureAltivec },
- { "7450" , PowerPCFeatureAltivec },
- { "750" , 0 },
- { "970" , PowerPCFeature64Bit | PowerPCFeatureAltivec |
+ { "601" , "Select the PowerPC 601 processor", 0 },
+ { "602" , "Select the PowerPC 602 processor", 0 },
+ { "603" , "Select the PowerPC 603 processor", 0 },
+ { "603e" , "Select the PowerPC 603e processor", 0 },
+ { "603ev" , "Select the PowerPC 603ev processor", 0 },
+ { "604" , "Select the PowerPC 604 processor", 0 },
+ { "604e" , "Select the PowerPC 604e processor", 0 },
+ { "620" , "Select the PowerPC 620 processor", 0 },
+ { "7400" , "Select the PowerPC 7400 (G4) processor",
+ PowerPCFeatureAltivec },
+ { "7450" , "Select the PowerPC 7450 (G4+) processor",
+ PowerPCFeatureAltivec },
+ { "750" , "Select the PowerPC 750 (G3) processor", 0 },
+ { "970" , "Select the PowerPC 970 (G5 - GPUL) processor",
+ PowerPCFeature64Bit | PowerPCFeatureAltivec |
PowerPCFeatureFSqrt | PowerPCFeatureGPUL },
- { "g3" , 0 },
- { "g4" , PowerPCFeatureAltivec },
- { "g4+" , PowerPCFeatureAltivec },
- { "g5" , PowerPCFeature64Bit | PowerPCFeatureAltivec |
+ { "g3" , "Select the PowerPC G3 (750) processor", 0 },
+ { "g4" , "Select the PowerPC G4 (7400) processor",
+ PowerPCFeatureAltivec },
+ { "g4+" , "Select the PowerPC G4+ (7450) processor",
+ PowerPCFeatureAltivec },
+ { "g5" , "Select the PowerPC g5 (970 - GPUL) processor",
+ PowerPCFeature64Bit | PowerPCFeatureAltivec |
PowerPCFeatureFSqrt | PowerPCFeatureGPUL },
- { "generic", 0 }
+ { "generic", "Select instructions for a generic PowerPC processor", 0 }
};
/// Length of PowerPCSubTypeKV.
static const unsigned PowerPCSubTypeKVSize = sizeof(PowerPCSubTypeKV)
@@ -66,10 +72,10 @@
/// Sorted (by key) array of values for CPU features.
static SubtargetFeatureKV PowerPCFeatureKV[] = {
- { "64bit" , PowerPCFeature64Bit },
- { "altivec", PowerPCFeatureAltivec },
- { "fsqrt" , PowerPCFeatureFSqrt },
- { "gpul" , PowerPCFeatureGPUL }
+ { "64bit" , "Should 64 bit instructions be used" , PowerPCFeature64Bit },
+ { "altivec", "Should Altivec instructions be used" , PowerPCFeatureAltivec },
+ { "fsqrt" , "Should the fsqrt instruction be used", PowerPCFeatureFSqrt },
+ { "gpul" , "Should GPUL instructions be used" , PowerPCFeatureGPUL }
};
/// Length of PowerPCFeatureKV.
static const unsigned PowerPCFeatureKVSize = sizeof(PowerPCFeatureKV)