[RISCV] Xqccmp v0.3 (#137854)

All the changes for v0.2 and v0.3 are either already implemented, or
irrelevant to the compiler implementation.

Author: lenary

clang/test/Driver/print-supported-extensions-riscv.c

@@ -213,7 +213,7 @@
 // CHECK-NEXT:     smctr                1.0       'Smctr' (Control Transfer Records Machine Level)
 // CHECK-NEXT:     ssctr                1.0       'Ssctr' (Control Transfer Records Supervisor Level)
 // CHECK-NEXT:     svukte               0.3       'Svukte' (Address-Independent Latency of User-Mode Faults to Supervisor Addresses)
-// CHECK-NEXT:     xqccmp               0.1       'Xqccmp' (Qualcomm 16-bit Push/Pop and Double Moves)
+// CHECK-NEXT:     xqccmp               0.3       'Xqccmp' (Qualcomm 16-bit Push/Pop and Double Moves)
 // CHECK-NEXT:     xqcia                0.7       'Xqcia' (Qualcomm uC Arithmetic Extension)
 // CHECK-NEXT:     xqciac               0.3       'Xqciac' (Qualcomm uC Load-Store Address Calculation Extension)
 // CHECK-NEXT:     xqcibi               0.2       'Xqcibi' (Qualcomm uC Branch Immediate Extension)

llvm/docs/RISCVUsage.rst

@@ -442,7 +442,7 @@ The current vendor extensions supported are:
   LLVM implements `the custom compressed opcodes present in some QingKe cores` by WCH / Nanjing Qinheng Microelectronics. The vendor refers to these opcodes by the name "XW".
 
 ``experimental-Xqccmp``
-  LLVM implements `version 0.1 of the 16-bit Push/Pop instructions and double-moves extension specification <https://github.com/quic/riscv-unified-db/releases/tag/Xqccmp_extension-0.1.0>`__ by Qualcomm. All instructions are prefixed with `qc.` as described in the specification.
+  LLVM implements `version 0.3 of the 16-bit Push/Pop instructions and double-moves extension specification <https://github.com/quic/riscv-unified-db/releases/tag/Xqccmp_extension-0.3.0>`__ by Qualcomm. All instructions are prefixed with `qc.` as described in the specification.
 
 ``experimental-Xqcia``
   LLVM implements `version 0.7 of the Qualcomm uC Arithmetic extension specification <https://github.com/quic/riscv-unified-db/releases/tag/Xqci-0.13.0>`__ by Qualcomm. These instructions are only available for riscv32.

llvm/lib/Target/RISCV/RISCVFeatures.td

@@ -1426,7 +1426,8 @@ def HasVendorXwchc
 // Qualcomm Extensions
 
 def FeatureVendorXqccmp
-    : RISCVExperimentalExtension<0, 1, "Qualcomm 16-bit Push/Pop and Double Moves",
+    : RISCVExperimentalExtension<0, 3,
+                                 "Qualcomm 16-bit Push/Pop and Double Moves",
                                  [FeatureStdExtZca]>;
 def HasVendorXqccmp
     : Predicate<"Subtarget->hasVendorXqccmp()">,

llvm/test/CodeGen/RISCV/attributes.ll

@@ -437,7 +437,7 @@
 ; RV32XTHEADMEMPAIR: .attribute 5, "rv32i2p1_xtheadmempair1p0"
 ; RV32XTHEADSYNC: .attribute 5, "rv32i2p1_xtheadsync1p0"
 ; RV32XWCHC: .attribute 5, "rv32i2p1_zca1p0_xwchc2p2"
-; RV32XQCCMP: .attribute 5, "rv32i2p1_zca1p0_xqccmp0p1"
+; RV32XQCCMP: .attribute 5, "rv32i2p1_zca1p0_xqccmp0p3"
 ; RV32XQCIA: .attribute 5, "rv32i2p1_xqcia0p7"
 ; RV32XQCIAC: .attribute 5, "rv32i2p1_zca1p0_xqciac0p3"
 ; RV32XQCIBI: .attribute 5, "rv32i2p1_zca1p0_xqcibi0p2"
@@ -683,7 +683,7 @@
 ; RV64SSCTR: .attribute 5, "rv64i2p1_sscsrind1p0_ssctr1p0"
 ; RV64SDEXT: .attribute 5, "rv64i2p1_sdext1p0"
 ; RV64SDTRIG: .attribute 5, "rv64i2p1_sdtrig1p0"
-; RV64XQCCMP: .attribute 5, "rv64i2p1_zca1p0_xqccmp0p1"
+; RV64XQCCMP: .attribute 5, "rv64i2p1_zca1p0_xqccmp0p3"
 
 ; RVI20U32: .attribute 5, "rv32i2p1"
 ; RVI20U64: .attribute 5, "rv64i2p1"

llvm/unittests/TargetParser/RISCVISAInfoTest.cpp

@@ -695,13 +695,13 @@ TEST(ParseArchString, RejectsConflictingExtensions) {
 
   for (StringRef Input :
        {"rv32idc_xqciac0p3", "rv32i_zcd_xqciac0p3", "rv32idc_xqcicm0p2",
-        "rv32i_zcd_xqcicm0p2", "rv32idc_xqccmp0p1", "rv32i_zcd_xqccmp0p1"}) {
+        "rv32i_zcd_xqcicm0p2", "rv32idc_xqccmp0p3", "rv32i_zcd_xqccmp0p3"}) {
     EXPECT_THAT(
         toString(RISCVISAInfo::parseArchString(Input, true).takeError()),
         ::testing::EndsWith("extension when 'd' extension is enabled"));
   }
 
-  for (StringRef Input : {"rv32i_zcmp_xqccmp0p1", "rv64i_zcmp_xqccmp0p1"}) {
+  for (StringRef Input : {"rv32i_zcmp_xqccmp0p3", "rv64i_zcmp_xqccmp0p3"}) {
     EXPECT_EQ(toString(RISCVISAInfo::parseArchString(Input, true).takeError()),
               "'zcmp' and 'xqccmp' extensions are incompatible");
   }
@@ -1184,7 +1184,7 @@ Experimental extensions
     smctr                1.0
     ssctr                1.0
     svukte               0.3
-    xqccmp               0.1
+    xqccmp               0.3
     xqcia                0.7
     xqciac               0.3
     xqcibi               0.2