Revert "[RISCV] Support ABI checking with per function target-features"

This reverts commit 109e4d12edda07bdec139de36d9fdb6f73399f92.

3 files changed, 10 insertions, 27 deletions

diff --git a/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp b/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
index 53562f42a18..cfd83e4189f 100644
--- a/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
+++ b/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
@@ -194,18 +194,6 @@ public:
     Parser.addAliasForDirective(".word", ".4byte");
     Parser.addAliasForDirective(".dword", ".8byte");
     setAvailableFeatures(ComputeAvailableFeatures(STI.getFeatureBits()));
-
-    if (Options.ABIName.back() == 'f' &&
-        !getSTI().getFeatureBits()[RISCV::FeatureStdExtF]) {
-      errs() << "Hard-float 'f' ABI can't be used for a target that "
-                "doesn't support the F instruction set extension (ignoring "
-                "target-abi)\n";
-    } else if (Options.ABIName.back() == 'd' &&
-               !getSTI().getFeatureBits()[RISCV::FeatureStdExtD]) {
-      errs() << "Hard-float 'd' ABI can't be used for a target that "
-                "doesn't support the D instruction set extension (ignoring "
-                "target-abi)\n";
-    }
   }
 };
 
diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index 5a2cffbc824..0b1fd382366 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -51,20 +51,6 @@ RISCVTargetLowering::RISCVTargetLowering(const TargetMachine &TM,
   RISCVABI::ABI ABI = Subtarget.getTargetABI();
   assert(ABI != RISCVABI::ABI_Unknown && "Improperly initialised target ABI");
 
-  if ((ABI == RISCVABI::ABI_ILP32F || ABI == RISCVABI::ABI_LP64F) &&
-      !Subtarget.hasStdExtF()) {
-    errs() << "Hard-float 'f' ABI can't be used for a target that "
-                "doesn't support the F instruction set extension (ignoring "
-                          "target-abi)\n";
-    ABI = Subtarget.is64Bit() ? RISCVABI::ABI_LP64 : RISCVABI::ABI_ILP32;
-  } else if ((ABI == RISCVABI::ABI_ILP32D || ABI == RISCVABI::ABI_LP64D) &&
-             !Subtarget.hasStdExtD()) {
-    errs() << "Hard-float 'd' ABI can't be used for a target that "
-              "doesn't support the D instruction set extension (ignoring "
-              "target-abi)\n";
-    ABI = Subtarget.is64Bit() ? RISCVABI::ABI_LP64 : RISCVABI::ABI_ILP32;
-  }
-
   switch (ABI) {
   default:
     report_fatal_error("Don't know how to lower this ABI");
diff --git a/llvm/lib/Target/RISCV/Utils/RISCVBaseInfo.cpp b/llvm/lib/Target/RISCV/Utils/RISCVBaseInfo.cpp
index 432ebb294d4..9c54c3749a1 100644
--- a/llvm/lib/Target/RISCV/Utils/RISCVBaseInfo.cpp
+++ b/llvm/lib/Target/RISCV/Utils/RISCVBaseInfo.cpp
@@ -37,8 +37,17 @@ ABI computeTargetABI(const Triple &TT, FeatureBitset FeatureBits,
     errs() << "64-bit ABIs are not supported for 32-bit targets (ignoring "
               "target-abi)\n";
     TargetABI = ABI_Unknown;
+  } else if (ABIName.endswith("f") && !FeatureBits[RISCV::FeatureStdExtF]) {
+    errs() << "Hard-float 'f' ABI can't be used for a target that "
+              "doesn't support the F instruction set extension (ignoring "
+              "target-abi)\n";
+    TargetABI = ABI_Unknown;
+  } else if (ABIName.endswith("d") && !FeatureBits[RISCV::FeatureStdExtD]) {
+    errs() << "Hard-float 'd' ABI can't be used for a target that "
+              "doesn't support the D instruction set extension (ignoring "
+              "target-abi)\n";
+    TargetABI = ABI_Unknown;
   } else if (IsRV32E && TargetABI != ABI_ILP32E && TargetABI != ABI_Unknown) {
-    // TODO: move this checking to RISCVTargetLowering and RISCVAsmParser
     errs()
         << "Only the ilp32e ABI is supported for RV32E (ignoring target-abi)\n";
     TargetABI = ABI_Unknown;