[clang] [llvm] [RISCV]Add svvptc extension (PR #113758)

via cfe-commits cfe-commits at lists.llvm.org
Sat Oct 26 01:24:05 PDT 2024


llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-mc

Author: None (dong-miao)

<details>
<summary>Changes</summary>

This commit adds the Obviating Memory-Management Instructions after Marking PTEs Valid (Svvptc) extension.
Specification link:[https://github.com/riscv/riscv-isa-manual/blob/main/src/supervisor.adoc](https://github.com/riscv/riscv-isa-manual/blob/main/src/supervisor.adoc)

---
Full diff: https://github.com/llvm/llvm-project/pull/113758.diff


7 Files Affected:

- (modified) clang/test/Driver/print-supported-extensions-riscv.c (+1) 
- (modified) clang/test/Preprocessor/riscv-target-features.c (+9) 
- (modified) llvm/docs/RISCVUsage.rst (+1) 
- (modified) llvm/lib/Target/RISCV/RISCVFeatures.td (+4) 
- (modified) llvm/test/CodeGen/RISCV/attributes.ll (+4) 
- (modified) llvm/test/MC/RISCV/attribute-arch.s (+3) 
- (modified) llvm/unittests/TargetParser/RISCVISAInfoTest.cpp (+1) 


``````````diff
diff --git a/clang/test/Driver/print-supported-extensions-riscv.c b/clang/test/Driver/print-supported-extensions-riscv.c
index 342d6e921a5a83..2d7376f8fe9401 100644
--- a/clang/test/Driver/print-supported-extensions-riscv.c
+++ b/clang/test/Driver/print-supported-extensions-riscv.c
@@ -146,6 +146,7 @@
 // CHECK-NEXT:     svinval              1.0       'Svinval' (Fine-Grained Address-Translation Cache Invalidation)
 // CHECK-NEXT:     svnapot              1.0       'Svnapot' (NAPOT Translation Contiguity)
 // CHECK-NEXT:     svpbmt               1.0       'Svpbmt' (Page-Based Memory Types)
+// CHECK-NEXT:     svvptc               1.0       'Svvptc' (Obviating Memory-Management Instructions after Marking PTEs Valid)
 // CHECK-NEXT:     xcvalu               1.0       'XCValu' (CORE-V ALU Operations)
 // CHECK-NEXT:     xcvbi                1.0       'XCVbi' (CORE-V Immediate Branching)
 // CHECK-NEXT:     xcvbitmanip          1.0       'XCVbitmanip' (CORE-V Bit Manipulation)
diff --git a/clang/test/Preprocessor/riscv-target-features.c b/clang/test/Preprocessor/riscv-target-features.c
index 98ad564d2b8408..5b4d42b053edc6 100644
--- a/clang/test/Preprocessor/riscv-target-features.c
+++ b/clang/test/Preprocessor/riscv-target-features.c
@@ -51,6 +51,7 @@
 // CHECK-NOT: __riscv_svinval {{.*$}}
 // CHECK-NOT: __riscv_svnapot {{.*$}}
 // CHECK-NOT: __riscv_svpbmt {{.*$}}
+// CHECK-NOT: __riscv_svvptc {{.*$}}
 // CHECK-NOT: __riscv_v {{.*$}}
 // CHECK-NOT: __riscv_v_elen {{.*$}}
 // CHECK-NOT: __riscv_v_elen_fp {{.*$}}
@@ -507,6 +508,14 @@
 // RUN:   -o - | FileCheck --check-prefix=CHECK-SVPBMT-EXT %s
 // CHECK-SVPBMT-EXT: __riscv_svpbmt 1000000{{$}}
 
+// RUN: %clang --target=riscv32-unknown-linux-gnu \
+// RUN:   -march=rv32isvvptc -E -dM %s \
+// RUN:   -o - | FileCheck --check-prefix=CHECK-SVVPTC-EXT %s
+// RUN: %clang --target=riscv64-unknown-linux-gnu \
+// RUN:   -march=rv64isvvptc -E -dM %s \
+// RUN:   -o - | FileCheck --check-prefix=CHECK-SVVPTC-EXT %s
+// CHECK-SVVPTC-EXT: __riscv_svvptc 1000000{{$}}
+
 // RUN: %clang --target=riscv32-unknown-linux-gnu \
 // RUN:   -march=rv32iv1p0 -E -dM %s \
 // RUN:   -o - | FileCheck --check-prefix=CHECK-V-EXT %s
diff --git a/llvm/docs/RISCVUsage.rst b/llvm/docs/RISCVUsage.rst
index ab58cdaa1b2f95..958168772fe413 100644
--- a/llvm/docs/RISCVUsage.rst
+++ b/llvm/docs/RISCVUsage.rst
@@ -155,6 +155,7 @@ on support follow.
      ``Svinval``       Assembly Support
      ``Svnapot``       Assembly Support
      ``Svpbmt``        Supported
+     ``Svvptc``        Supported
      ``V``             Supported
      ``Za128rs``       Supported (`See note <#riscv-profiles-extensions-note>`__)
      ``Za64rs``        Supported (`See note <#riscv-profiles-extensions-note>`__)
diff --git a/llvm/lib/Target/RISCV/RISCVFeatures.td b/llvm/lib/Target/RISCV/RISCVFeatures.td
index 778df542022f22..3b86bc69153631 100644
--- a/llvm/lib/Target/RISCV/RISCVFeatures.td
+++ b/llvm/lib/Target/RISCV/RISCVFeatures.td
@@ -1029,6 +1029,10 @@ def FeatureStdExtSvpbmt
     : RISCVExtension<"svpbmt", 1, 0,
                      "'Svpbmt' (Page-Based Memory Types)">;
 
+def FeatureStdExtSvvptc
+    : RISCVExtension<"svvptc", 1, 0,
+                     "'svvptc' (Obviating Memory-Management Instructions after Marking PTEs Valid)">;                     
+
 // Pointer Masking extensions
 
 // A supervisor-level extension that provides pointer masking for the next lower
diff --git a/llvm/test/CodeGen/RISCV/attributes.ll b/llvm/test/CodeGen/RISCV/attributes.ll
index e9743d484f776f..2d07919e042edc 100644
--- a/llvm/test/CodeGen/RISCV/attributes.ll
+++ b/llvm/test/CodeGen/RISCV/attributes.ll
@@ -62,6 +62,7 @@
 ; RUN: llc -mtriple=riscv32 -mattr=+svnapot %s -o - | FileCheck --check-prefixes=CHECK,RV32SVNAPOT %s
 ; RUN: llc -mtriple=riscv32 -mattr=+svpbmt %s -o - | FileCheck --check-prefixes=CHECK,RV32SVPBMT %s
 ; RUN: llc -mtriple=riscv32 -mattr=+svinval %s -o - | FileCheck --check-prefixes=CHECK,RV32SVINVAL %s
+; RUN: llc -mtriple=riscv32 -mattr=+svvptc %s -o - | FileCheck --check-prefixes=CHECK,RV32SVVPTC %s
 ; RUN: llc -mtriple=riscv32 -mattr=+xcvalu %s -o - | FileCheck --check-prefix=RV32XCVALU %s
 ; RUN: llc -mtriple=riscv32 -mattr=+xcvbitmanip %s -o - | FileCheck --check-prefix=RV32XCVBITMANIP %s
 ; RUN: llc -mtriple=riscv32 -mattr=+xcvelw %s -o - | FileCheck --check-prefix=RV32XCVELW %s
@@ -201,6 +202,7 @@
 ; RUN: llc -mtriple=riscv64 -mattr=+svnapot %s -o - | FileCheck --check-prefixes=CHECK,RV64SVNAPOT %s
 ; RUN: llc -mtriple=riscv64 -mattr=+svpbmt %s -o - | FileCheck --check-prefixes=CHECK,RV64SVPBMT %s
 ; RUN: llc -mtriple=riscv64 -mattr=+svinval %s -o - | FileCheck --check-prefixes=CHECK,RV64SVINVAL %s
+; RUN: llc -mtriple=riscv64 -mattr=+svvptc %s -o - | FileCheck --check-prefixes=CHECK,RV64SVVPTC %s
 ; RUN: llc -mtriple=riscv64 -mattr=+xventanacondops %s -o - | FileCheck --check-prefixes=CHECK,RV64XVENTANACONDOPS %s
 ; RUN: llc -mtriple=riscv64 -mattr=+xsfvfwmaccqqq %s -o - | FileCheck --check-prefix=RV64XSFVFWMACCQQQ %s
 ; RUN: llc -mtriple=riscv64 -mattr=+xtheadba %s -o - | FileCheck --check-prefixes=CHECK,RV64XTHEADBA %s
@@ -356,6 +358,7 @@
 ; RV32SVNAPOT: .attribute 5, "rv32i2p1_svnapot1p0"
 ; RV32SVPBMT: .attribute 5, "rv32i2p1_svpbmt1p0"
 ; RV32SVINVAL: .attribute 5, "rv32i2p1_svinval1p0"
+; RV32SVVPTC: .attribute 5, "rv32i2p1_svvptc1p0"
 ; RV32XCVALU: .attribute 5, "rv32i2p1_xcvalu1p0"
 ; RV32XCVBITMANIP: .attribute 5, "rv32i2p1_xcvbitmanip1p0"
 ; RV32XCVELW: .attribute 5, "rv32i2p1_xcvelw1p0"
@@ -497,6 +500,7 @@
 ; RV64SVNAPOT: .attribute 5, "rv64i2p1_svnapot1p0"
 ; RV64SVPBMT: .attribute 5, "rv64i2p1_svpbmt1p0"
 ; RV64SVINVAL: .attribute 5, "rv64i2p1_svinval1p0"
+; RV64SVVPTC: .attribute 5, "rv64i2p1_svvptc1p0"
 ; RV64XVENTANACONDOPS: .attribute 5, "rv64i2p1_xventanacondops1p0"
 ; RV64XSFVFWMACCQQQ: .attribute 5, "rv64i2p1_f2p2_zicsr2p0_zve32f1p0_zve32x1p0_zvfbfmin1p0_zvl32b1p0_xsfvfwmaccqqq1p0"
 ; RV64XTHEADBA: .attribute 5, "rv64i2p1_xtheadba1p0"
diff --git a/llvm/test/MC/RISCV/attribute-arch.s b/llvm/test/MC/RISCV/attribute-arch.s
index 2332bcacc99d06..a744a660a7076f 100644
--- a/llvm/test/MC/RISCV/attribute-arch.s
+++ b/llvm/test/MC/RISCV/attribute-arch.s
@@ -375,6 +375,9 @@
 .attribute arch, "rv32i_svbare1p0"
 # CHECK: attribute      5, "rv32i2p1_svbare1p0"
 
+.attribute arch, "rv32i_svvptc1p0"
+# CHECK: attribute      5, "rv32i2p1_svvptc1p0"
+
 .attribute arch, "rv32i_zfbfmin1p0"
 # CHECK: .attribute     5, "rv32i2p1_f2p2_zicsr2p0_zfbfmin1p0"
 
diff --git a/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp b/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp
index 2e9c548ae872f3..4e24bcd6632ce9 100644
--- a/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp
+++ b/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp
@@ -1091,6 +1091,7 @@ R"(All available -march extensions for RISC-V
     svinval              1.0
     svnapot              1.0
     svpbmt               1.0
+    svvptc               1.0
     xcvalu               1.0
     xcvbi                1.0
     xcvbitmanip          1.0

``````````

</details>


https://github.com/llvm/llvm-project/pull/113758


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