-Added API for retrieving the default FPU of a CPU from TargetParser.

-Implemented as a table lookup.

Change-Id: Ibf7217f6bd2769e9c06835a5aede3d072dee6757
Phabricator: http://reviews.llvm.org/D11100
llvm-svn: 242141

1 files changed, 96 insertions, 83 deletions

diff --git a/llvm/lib/Support/TargetParser.cpp b/llvm/lib/Support/TargetParser.cpp
index 4d4c041b843..e5ae0e05185 100644
--- a/llvm/lib/Support/TargetParser.cpp
+++ b/llvm/lib/Support/TargetParser.cpp
@@ -138,93 +138,98 @@ struct {
 struct {
   const char *Name;
   ARM::ArchKind ArchID;
+  ARM::FPUKind DefaultFPU;
   bool Default;
 } CPUNames[] = {
-  { "arm2",          ARM::AK_ARMV2,    true },
-  { "arm3",          ARM::AK_ARMV2A,   true },
-  { "arm6",          ARM::AK_ARMV3,    true },
-  { "arm7m",         ARM::AK_ARMV3M,   true },
-  { "arm8",          ARM::AK_ARMV4,    false },
-  { "arm810",        ARM::AK_ARMV4,    false },
-  { "strongarm",     ARM::AK_ARMV4,    true },
-  { "strongarm110",  ARM::AK_ARMV4,    false },
-  { "strongarm1100", ARM::AK_ARMV4,    false },
-  { "strongarm1110", ARM::AK_ARMV4,    false },
-  { "arm7tdmi",      ARM::AK_ARMV4T,   true },
-  { "arm7tdmi-s",    ARM::AK_ARMV4T,   false },
-  { "arm710t",       ARM::AK_ARMV4T,   false },
-  { "arm720t",       ARM::AK_ARMV4T,   false },
-  { "arm9",          ARM::AK_ARMV4T,   false },
-  { "arm9tdmi",      ARM::AK_ARMV4T,   false },
-  { "arm920",        ARM::AK_ARMV4T,   false },
-  { "arm920t",       ARM::AK_ARMV4T,   false },
-  { "arm922t",       ARM::AK_ARMV4T,   false },
-  { "arm9312",       ARM::AK_ARMV4T,   false },
-  { "arm940t",       ARM::AK_ARMV4T,   false },
-  { "ep9312",        ARM::AK_ARMV4T,   false },
-  { "arm10tdmi",     ARM::AK_ARMV5T,   true },
-  { "arm1020t",      ARM::AK_ARMV5T,   false },
-  { "arm9e",         ARM::AK_ARMV5TE,  false },
-  { "arm946e-s",     ARM::AK_ARMV5TE,  false },
-  { "arm966e-s",     ARM::AK_ARMV5TE,  false },
-  { "arm968e-s",     ARM::AK_ARMV5TE,  false },
-  { "arm10e",        ARM::AK_ARMV5TE,  false },
-  { "arm1020e",      ARM::AK_ARMV5TE,  false },
-  { "arm1022e",      ARM::AK_ARMV5TE,  true },
-  { "iwmmxt",        ARM::AK_ARMV5TE,  false },
-  { "xscale",        ARM::AK_ARMV5TE,  false },
-  { "arm926ej-s",    ARM::AK_ARMV5TEJ, true },
-  { "arm1136jf-s",   ARM::AK_ARMV6,    true },
-  { "arm1176j-s",    ARM::AK_ARMV6K,   false },
-  { "arm1176jz-s",   ARM::AK_ARMV6K,   false },
-  { "mpcore",        ARM::AK_ARMV6K,   false },
-  { "mpcorenovfp",   ARM::AK_ARMV6K,   false },
-  { "arm1176jzf-s",  ARM::AK_ARMV6K,   true },
-  { "arm1176jzf-s",  ARM::AK_ARMV6Z,   true },
-  { "arm1176jzf-s",  ARM::AK_ARMV6ZK,  true },
-  { "arm1156t2-s",   ARM::AK_ARMV6T2,  true },
-  { "arm1156t2f-s",  ARM::AK_ARMV6T2,  false },
-  { "cortex-m0",     ARM::AK_ARMV6M,   true },
-  { "cortex-m0plus", ARM::AK_ARMV6M,   false },
-  { "cortex-m1",     ARM::AK_ARMV6M,   false },
-  { "sc000",         ARM::AK_ARMV6M,   false },
-  { "cortex-a5",     ARM::AK_ARMV7A,   false },
-  { "cortex-a7",     ARM::AK_ARMV7A,   false },
-  { "cortex-a8",     ARM::AK_ARMV7A,   true },
-  { "cortex-a9",     ARM::AK_ARMV7A,   false },
-  { "cortex-a12",    ARM::AK_ARMV7A,   false },
-  { "cortex-a15",    ARM::AK_ARMV7A,   false },
-  { "cortex-a17",    ARM::AK_ARMV7A,   false },
-  { "krait",         ARM::AK_ARMV7A,   false },
-  { "cortex-r4",     ARM::AK_ARMV7R,   true },
-  { "cortex-r4f",    ARM::AK_ARMV7R,   false },
-  { "cortex-r5",     ARM::AK_ARMV7R,   false },
-  { "cortex-r7",     ARM::AK_ARMV7R,   false },
-  { "sc300",         ARM::AK_ARMV7M,   false },
-  { "cortex-m3",     ARM::AK_ARMV7M,   true },
-  { "cortex-m4",     ARM::AK_ARMV7EM,  true },
-  { "cortex-m7",     ARM::AK_ARMV7EM,  false },
-  { "cortex-a53",    ARM::AK_ARMV8A,   true },
-  { "cortex-a57",    ARM::AK_ARMV8A,   false },
-  { "cortex-a72",    ARM::AK_ARMV8A,   false },
-  { "cyclone",       ARM::AK_ARMV8A,   false },
-  { "generic",       ARM::AK_ARMV8_1A, true },
+  { "arm2",          ARM::AK_ARMV2,    ARM::FK_NONE,       true },
+  { "arm3",          ARM::AK_ARMV2A,   ARM::FK_NONE,       true },
+  { "arm6",          ARM::AK_ARMV3,    ARM::FK_NONE,       true },
+  { "arm7m",         ARM::AK_ARMV3M,   ARM::FK_NONE,       true },
+  { "arm8",          ARM::AK_ARMV4,    ARM::FK_NONE,       false },
+  { "arm810",        ARM::AK_ARMV4,    ARM::FK_NONE,       false },
+  { "strongarm",     ARM::AK_ARMV4,    ARM::FK_NONE,       true },
+  { "strongarm110",  ARM::AK_ARMV4,    ARM::FK_NONE,       false },
+  { "strongarm1100", ARM::AK_ARMV4,    ARM::FK_NONE,       false },
+  { "strongarm1110", ARM::AK_ARMV4,    ARM::FK_NONE,       false },
+  { "arm7tdmi",      ARM::AK_ARMV4T,   ARM::FK_NONE,       true },
+  { "arm7tdmi-s",    ARM::AK_ARMV4T,   ARM::FK_NONE,       false },
+  { "arm710t",       ARM::AK_ARMV4T,   ARM::FK_NONE,       false },
+  { "arm720t",       ARM::AK_ARMV4T,   ARM::FK_NONE,       false },
+  { "arm9",          ARM::AK_ARMV4T,   ARM::FK_NONE,       false },
+  { "arm9tdmi",      ARM::AK_ARMV4T,   ARM::FK_NONE,       false },
+  { "arm920",        ARM::AK_ARMV4T,   ARM::FK_NONE,       false },
+  { "arm920t",       ARM::AK_ARMV4T,   ARM::FK_NONE,       false },
+  { "arm922t",       ARM::AK_ARMV4T,   ARM::FK_NONE,       false },
+  { "arm9312",       ARM::AK_ARMV4T,   ARM::FK_NONE,       false },
+  { "arm940t",       ARM::AK_ARMV4T,   ARM::FK_NONE,       false },
+  { "ep9312",        ARM::AK_ARMV4T,   ARM::FK_NONE,       false },
+  { "arm10tdmi",     ARM::AK_ARMV5T,   ARM::FK_NONE,       true },
+  { "arm1020t",      ARM::AK_ARMV5T,   ARM::FK_NONE,       false },
+  { "arm9e",         ARM::AK_ARMV5TE,  ARM::FK_NONE,       false },
+  { "arm946e-s",     ARM::AK_ARMV5TE,  ARM::FK_NONE,       false },
+  { "arm966e-s",     ARM::AK_ARMV5TE,  ARM::FK_NONE,       false },
+  { "arm968e-s",     ARM::AK_ARMV5TE,  ARM::FK_NONE,       false },
+  { "arm10e",        ARM::AK_ARMV5TE,  ARM::FK_NONE,       false },
+  { "arm1020e",      ARM::AK_ARMV5TE,  ARM::FK_NONE,       false },
+  { "arm1022e",      ARM::AK_ARMV5TE,  ARM::FK_NONE,       true },
+  { "iwmmxt",        ARM::AK_ARMV5TE,  ARM::FK_NONE,       false },
+  { "xscale",        ARM::AK_ARMV5TE,  ARM::FK_NONE,       false },
+  { "arm926ej-s",    ARM::AK_ARMV5TEJ, ARM::FK_NONE,       true },
+  { "arm1136jf-s",   ARM::AK_ARMV6,    ARM::FK_VFPV2,      true },
+  { "arm1176j-s",    ARM::AK_ARMV6K,   ARM::FK_NONE,       false },
+  { "arm1176jz-s",   ARM::AK_ARMV6K,   ARM::FK_NONE,       false },
+  { "mpcore",        ARM::AK_ARMV6K,   ARM::FK_VFPV2,      false },
+  { "mpcorenovfp",   ARM::AK_ARMV6K,   ARM::FK_NONE,       false },
+  { "arm1176jzf-s",  ARM::AK_ARMV6K,   ARM::FK_VFPV2,      true },
+  { "arm1176jzf-s",  ARM::AK_ARMV6Z,   ARM::FK_VFPV2,      true },
+  { "arm1176jzf-s",  ARM::AK_ARMV6ZK,  ARM::FK_VFPV2,      true },
+  { "arm1156t2-s",   ARM::AK_ARMV6T2,  ARM::FK_NONE,       true },
+  { "arm1156t2f-s",  ARM::AK_ARMV6T2,  ARM::FK_VFPV2,      false },
+  { "cortex-m0",     ARM::AK_ARMV6M,   ARM::FK_NONE,       true },
+  { "cortex-m0plus", ARM::AK_ARMV6M,   ARM::FK_NONE,       false },
+  { "cortex-m1",     ARM::AK_ARMV6M,   ARM::FK_NONE,       false },
+  { "sc000",         ARM::AK_ARMV6M,   ARM::FK_NONE,       false },
+  { "cortex-a5",     ARM::AK_ARMV7A,   ARM::FK_NEON_VFPV4, false },
+  { "cortex-a7",     ARM::AK_ARMV7A,   ARM::FK_NEON_VFPV4, false },
+  { "cortex-a8",     ARM::AK_ARMV7A,   ARM::FK_NEON,       true },
+  { "cortex-a9",     ARM::AK_ARMV7A,   ARM::FK_NEON_FP16,  false },
+  { "cortex-a12",    ARM::AK_ARMV7A,   ARM::FK_NEON_VFPV4, false },
+  { "cortex-a15",    ARM::AK_ARMV7A,   ARM::FK_NEON_VFPV4, false },
+  { "cortex-a17",    ARM::AK_ARMV7A,   ARM::FK_NEON_VFPV4, false },
+  { "krait",         ARM::AK_ARMV7A,   ARM::FK_NEON_VFPV4, false },
+  { "cortex-r4",     ARM::AK_ARMV7R,   ARM::FK_NONE,       true },
+  { "cortex-r4f",    ARM::AK_ARMV7R,   ARM::FK_VFPV3_D16,  false },
+  { "cortex-r5",     ARM::AK_ARMV7R,   ARM::FK_NONE,       false },
+  // FIXME cortex-r5f missing from ARM.td
+  { "cortex-r5f",    ARM::AK_ARMV7R,   ARM::FK_VFPV3_D16,      false },
+  { "cortex-r7",     ARM::AK_ARMV7R,   ARM::FK_VFPV3_D16_FP16, false },
+  { "sc300",         ARM::AK_ARMV7M,   ARM::FK_NONE,           false },
+  { "cortex-m3",     ARM::AK_ARMV7M,   ARM::FK_NONE,           true },
+  { "cortex-m4",     ARM::AK_ARMV7EM,  ARM::FK_NONE,           true },
+  // FIXME cortex-m4f missing from ARM.td
+  { "cortex-m4f",    ARM::AK_ARMV7EM,  ARM::FK_FPV4_SP_D16,          false },
+  { "cortex-m7",     ARM::AK_ARMV7EM,  ARM::FK_FPV5_D16,             false },
+  { "cortex-a53",    ARM::AK_ARMV8A,   ARM::FK_CRYPTO_NEON_FP_ARMV8, true },
+  { "cortex-a57",    ARM::AK_ARMV8A,   ARM::FK_CRYPTO_NEON_FP_ARMV8, false },
+  { "cortex-a72",    ARM::AK_ARMV8A,   ARM::FK_CRYPTO_NEON_FP_ARMV8, false },
+  { "cyclone",       ARM::AK_ARMV8A,   ARM::FK_CRYPTO_NEON_FP_ARMV8, false },
+  { "generic",       ARM::AK_ARMV8_1A, ARM::FK_NEON_FP_ARMV8,        true },
   // Non-standard Arch names.
-  { "iwmmxt",        ARM::AK_IWMMXT,   true },
-  { "xscale",        ARM::AK_XSCALE,   true },
-  { "arm10tdmi",     ARM::AK_ARMV5,    true },
-  { "arm1022e",      ARM::AK_ARMV5E,   true },
-  { "arm1136j-s",    ARM::AK_ARMV6J,   true },
-  { "arm1136jz-s",   ARM::AK_ARMV6J,   false },
-  { "cortex-m0",     ARM::AK_ARMV6SM,  true },
-  { "arm1176jzf-s",  ARM::AK_ARMV6HL,  true },
-  { "cortex-a8",     ARM::AK_ARMV7,    true },
-  { "cortex-a8",     ARM::AK_ARMV7L,   true },
-  { "cortex-a8",     ARM::AK_ARMV7HL,  true },
-  { "cortex-m4",     ARM::AK_ARMV7EM,  true },
-  { "swift",         ARM::AK_ARMV7S,   true },
+  { "iwmmxt",        ARM::AK_IWMMXT,   ARM::FK_NONE,       true },
+  { "xscale",        ARM::AK_XSCALE,   ARM::FK_NONE,       true },
+  { "arm10tdmi",     ARM::AK_ARMV5,    ARM::FK_NONE,       true },
+  { "arm1022e",      ARM::AK_ARMV5E,   ARM::FK_NONE,       true },
+  { "arm1136j-s",    ARM::AK_ARMV6J,   ARM::FK_NONE,       true },
+  { "arm1136jz-s",   ARM::AK_ARMV6J,   ARM::FK_NONE,       false },
+  { "cortex-m0",     ARM::AK_ARMV6SM,  ARM::FK_NONE,       true },
+  { "arm1176jzf-s",  ARM::AK_ARMV6HL,  ARM::FK_VFPV2,      true },
+  { "cortex-a8",     ARM::AK_ARMV7,    ARM::FK_NEON,       true },
+  { "cortex-a8",     ARM::AK_ARMV7L,   ARM::FK_NEON,       true },
+  { "cortex-a8",     ARM::AK_ARMV7HL,  ARM::FK_NEON,       true },
+  { "cortex-m4",     ARM::AK_ARMV7EM,  ARM::FK_NONE,       true },
+  { "swift",         ARM::AK_ARMV7S,   ARM::FK_NEON_VFPV4, true },
   // Invalid CPU
-  { "invalid",       ARM::AK_INVALID,  true }
+  { "invalid",       ARM::AK_INVALID,  ARM::FK_INVALID,    true }
 };
 
 } // namespace
@@ -257,6 +262,14 @@ unsigned ARMTargetParser::getFPURestriction(unsigned FPUKind) {
   return FPUNames[FPUKind].Restriction;
 }
 
+unsigned ARMTargetParser::getDefaultFPU(StringRef CPU) {
+  for (const auto C : CPUNames) {
+    if (CPU == C.Name)
+      return C.DefaultFPU;
+  }
+  return ARM::FK_INVALID;
+}
+
 bool ARMTargetParser::getFPUFeatures(unsigned FPUKind,
                                      std::vector<const char *> &Features) {