gentoo auto-resync : 08:10:2022 - 19:30:29

1 files changed, 0 insertions, 799 deletions

diff --git a/dev-lang/ghc/files/ghc-9.0.2-riscv64-llvm.patch b/dev-lang/ghc/files/ghc-9.0.2-riscv64-llvm.patch
deleted file mode 100644
index 0dcd6cde197b..000000000000
--- a/dev-lang/ghc/files/ghc-9.0.2-riscv64-llvm.patch
+++ /dev/null
@@ -1,799 +0,0 @@
-GHC supplied all of the information necessary for a registerised build on riscv using LLVM codegen in 9.2.
-Andreas Schwab backported this to 8.10.7 in OpenSUSE:  https://build.opensuse.org/package/show/openSUSE:Factory:RISCV/ghc
-This is a forward-port of the backport to 9.0.
-
-diff --git a/compiler/GHC/CmmToAsm.hs b/compiler/GHC/CmmToAsm.hs
-index 23175a1cd2..3f77573495 100644
---- a/compiler/GHC/CmmToAsm.hs
-+++ b/compiler/GHC/CmmToAsm.hs
-@@ -182,6 +182,7 @@ nativeCodeGen dflags this_mod modLoc h us cmms
-       ArchAlpha     -> panic "nativeCodeGen: No NCG for Alpha"
-       ArchMipseb    -> panic "nativeCodeGen: No NCG for mipseb"
-       ArchMipsel    -> panic "nativeCodeGen: No NCG for mipsel"
-+      ArchRISCV64   -> panic "nativeCodeGen: No NCG for RISCV64"
-       ArchUnknown   -> panic "nativeCodeGen: No NCG for unknown arch"
-       ArchJavaScript-> panic "nativeCodeGen: No NCG for JavaScript"
-
-diff --git a/compiler/GHC/CmmToAsm/Reg/Graph/TrivColorable.hs b/compiler/GHC/CmmToAsm/Reg/Graph/TrivColorable.hs
-index 105e2ebdf9..07eca93ac3 100644
---- a/compiler/GHC/CmmToAsm/Reg/Graph/TrivColorable.hs
-+++ b/compiler/GHC/CmmToAsm/Reg/Graph/TrivColorable.hs
-@@ -120,6 +120,7 @@ trivColorable platform virtualRegSqueeze realRegSqueeze RcInteger conflicts excl
-                             ArchMipseb    -> panic "trivColorable ArchMipseb"
-                             ArchMipsel    -> panic "trivColorable ArchMipsel"
-                             ArchS390X     -> panic "trivColorable ArchS390X"
-+                            ArchRISCV64   -> panic "trivColorable ArchRISCV64"
-                             ArchJavaScript-> panic "trivColorable ArchJavaScript"
-                             ArchUnknown   -> panic "trivColorable ArchUnknown")
-         , count2        <- accSqueeze 0 cALLOCATABLE_REGS_INTEGER
-@@ -151,6 +152,7 @@ trivColorable platform virtualRegSqueeze realRegSqueeze RcFloat conflicts exclus
-                             ArchMipseb    -> panic "trivColorable ArchMipseb"
-                             ArchMipsel    -> panic "trivColorable ArchMipsel"
-                             ArchS390X     -> panic "trivColorable ArchS390X"
-+                            ArchRISCV64   -> panic "trivColorable ArchRISCV64"
-                             ArchJavaScript-> panic "trivColorable ArchJavaScript"
-                             ArchUnknown   -> panic "trivColorable ArchUnknown")
-         , count2        <- accSqueeze 0 cALLOCATABLE_REGS_FLOAT
-@@ -184,6 +186,7 @@ trivColorable platform virtualRegSqueeze realRegSqueeze RcDouble conflicts exclu
-                             ArchMipseb    -> panic "trivColorable ArchMipseb"
-                             ArchMipsel    -> panic "trivColorable ArchMipsel"
-                             ArchS390X     -> panic "trivColorable ArchS390X"
-+                            ArchRISCV64   -> panic "trivColorable ArchRISCV64"
-                             ArchJavaScript-> panic "trivColorable ArchJavaScript"
-                             ArchUnknown   -> panic "trivColorable ArchUnknown")
-         , count2        <- accSqueeze 0 cALLOCATABLE_REGS_DOUBLE
-diff --git a/compiler/GHC/CmmToAsm/Reg/Linear.hs b/compiler/GHC/CmmToAsm/Reg/Linear.hs
-index 1ab353cc34..d8228c69cd 100644
---- a/compiler/GHC/CmmToAsm/Reg/Linear.hs
-+++ b/compiler/GHC/CmmToAsm/Reg/Linear.hs
-@@ -225,6 +225,7 @@ linearRegAlloc config entry_ids block_live sccs
-       ArchAlpha      -> panic "linearRegAlloc ArchAlpha"
-       ArchMipseb     -> panic "linearRegAlloc ArchMipseb"
-       ArchMipsel     -> panic "linearRegAlloc ArchMipsel"
-+      ArchRISCV64    -> panic "linearRegAlloc ArchRISCV64"
-       ArchJavaScript -> panic "linearRegAlloc ArchJavaScript"
-       ArchUnknown    -> panic "linearRegAlloc ArchUnknown"
-  where
-diff --git a/compiler/GHC/CmmToAsm/Reg/Linear/FreeRegs.hs b/compiler/GHC/CmmToAsm/Reg/Linear/FreeRegs.hs
-index b89c056a82..1768422f5c 100644
---- a/compiler/GHC/CmmToAsm/Reg/Linear/FreeRegs.hs
-+++ b/compiler/GHC/CmmToAsm/Reg/Linear/FreeRegs.hs
-@@ -83,5 +83,6 @@ maxSpillSlots config = case platformArch (ncgPlatform config) of
-    ArchAlpha     -> panic "maxSpillSlots ArchAlpha"
-    ArchMipseb    -> panic "maxSpillSlots ArchMipseb"
-    ArchMipsel    -> panic "maxSpillSlots ArchMipsel"
-+   ArchRISCV64   -> panic "maxSpillSlots ArchRISCV64"
-    ArchJavaScript-> panic "maxSpillSlots ArchJavaScript"
-    ArchUnknown   -> panic "maxSpillSlots ArchUnknown"
-diff --git a/compiler/GHC/CmmToAsm/Reg/Target.hs b/compiler/GHC/CmmToAsm/Reg/Target.hs
-index ba249801ba..284df45983 100644
---- a/compiler/GHC/CmmToAsm/Reg/Target.hs
-+++ b/compiler/GHC/CmmToAsm/Reg/Target.hs
-@@ -51,6 +51,7 @@ targetVirtualRegSqueeze platform
-       ArchAlpha     -> panic "targetVirtualRegSqueeze ArchAlpha"
-       ArchMipseb    -> panic "targetVirtualRegSqueeze ArchMipseb"
-       ArchMipsel    -> panic "targetVirtualRegSqueeze ArchMipsel"
-+      ArchRISCV64   -> panic "targetVirtualRegSqueeze ArchRISCV64"
-       ArchJavaScript-> panic "targetVirtualRegSqueeze ArchJavaScript"
-       ArchUnknown   -> panic "targetVirtualRegSqueeze ArchUnknown"
-
-@@ -70,6 +71,7 @@ targetRealRegSqueeze platform
-       ArchAlpha     -> panic "targetRealRegSqueeze ArchAlpha"
-       ArchMipseb    -> panic "targetRealRegSqueeze ArchMipseb"
-       ArchMipsel    -> panic "targetRealRegSqueeze ArchMipsel"
-+      ArchRISCV64   -> panic "targetRealRegSqueeze ArchRISCV64"
-       ArchJavaScript-> panic "targetRealRegSqueeze ArchJavaScript"
-       ArchUnknown   -> panic "targetRealRegSqueeze ArchUnknown"
-
-@@ -88,6 +90,7 @@ targetClassOfRealReg platform
-       ArchAlpha     -> panic "targetClassOfRealReg ArchAlpha"
-       ArchMipseb    -> panic "targetClassOfRealReg ArchMipseb"
-       ArchMipsel    -> panic "targetClassOfRealReg ArchMipsel"
-+      ArchRISCV64   -> panic "targetClassOfRealReg ArchRISCV64"
-       ArchJavaScript-> panic "targetClassOfRealReg ArchJavaScript"
-       ArchUnknown   -> panic "targetClassOfRealReg ArchUnknown"
-
-@@ -106,6 +109,7 @@ targetMkVirtualReg platform
-       ArchAlpha     -> panic "targetMkVirtualReg ArchAlpha"
-       ArchMipseb    -> panic "targetMkVirtualReg ArchMipseb"
-       ArchMipsel    -> panic "targetMkVirtualReg ArchMipsel"
-+      ArchRISCV64   -> panic "targetMkVirtualReg ArchRISCV64"
-       ArchJavaScript-> panic "targetMkVirtualReg ArchJavaScript"
-       ArchUnknown   -> panic "targetMkVirtualReg ArchUnknown"
-
-@@ -124,6 +128,7 @@ targetRegDotColor platform
-       ArchAlpha     -> panic "targetRegDotColor ArchAlpha"
-       ArchMipseb    -> panic "targetRegDotColor ArchMipseb"
-       ArchMipsel    -> panic "targetRegDotColor ArchMipsel"
-+      ArchRISCV64   -> panic "targetRegDotColor ArchRISCV64"
-       ArchJavaScript-> panic "targetRegDotColor ArchJavaScript"
-       ArchUnknown   -> panic "targetRegDotColor ArchUnknown"
-
-diff --git a/compiler/GHC/CmmToLlvm/Mangler.hs b/compiler/GHC/CmmToLlvm/Mangler.hs
-index 0436dbcf07..5c71655ab3 100644
---- a/compiler/GHC/CmmToLlvm/Mangler.hs
-+++ b/compiler/GHC/CmmToLlvm/Mangler.hs
-@@ -42,7 +42,7 @@ llvmFixupAsm dflags f1 f2 = {-# SCC "llvm_mangler" #-}
-
- -- | These are the rewrites that the mangler will perform
- rewrites :: [Rewrite]
--rewrites = [rewriteSymType, rewriteAVX]
-+rewrites = [rewriteSymType, rewriteAVX, rewriteCall]
-
- type Rewrite = DynFlags -> B.ByteString -> Maybe B.ByteString
-
-@@ -106,6 +106,27 @@ rewriteAVX dflags s
-     isVmovdqa = B.isPrefixOf (B.pack "vmovdqa")
-     isVmovap = B.isPrefixOf (B.pack "vmovap")
-
-+-- | This rewrites (tail) calls to avoid creating PLT entries for
-+-- functions on riscv64. The replacement will load the address from the
-+-- GOT, which is resolved to point to the real address of the function.
-+rewriteCall :: Rewrite
-+rewriteCall dflags l
-+  | not isRISCV64 = Nothing
-+  | isCall l      = Just $ replaceCall "call" "jalr" "ra" l
-+  | isTail l      = Just $ replaceCall "tail" "jr" "t1" l
-+  | otherwise     = Nothing
-+  where
-+    isRISCV64 = platformArch (targetPlatform dflags) == ArchRISCV64
-+    isCall = B.isPrefixOf (B.pack "call\t")
-+    isTail = B.isPrefixOf (B.pack "tail\t")
-+
-+    replaceCall call jump reg l =
-+        appendInsn (jump ++ "\t" ++ reg) $ removePlt $
-+        replaceOnce (B.pack call) (B.pack ("la\t" ++ reg ++ ",")) l
-+      where
-+        removePlt = replaceOnce (B.pack "@plt") (B.pack "")
-+        appendInsn i = (`B.append` B.pack ("\n\t" ++ i))
-+
- -- | @replaceOnce match replace bs@ replaces the first occurrence of the
- -- substring @match@ in @bs@ with @replace@.
- replaceOnce :: B.ByteString -> B.ByteString -> B.ByteString -> B.ByteString
-diff --git a/compiler/GHC/Driver/Pipeline.hs b/compiler/GHC/Driver/Pipeline.hs
-index 8edf49dfdd..d66404e916 100644
---- a/compiler/GHC/Driver/Pipeline.hs
-+++ b/compiler/GHC/Driver/Pipeline.hs
-@@ -936,6 +936,7 @@ llvmOptions dflags =
-     ++ [("", "-mcpu=" ++ mcpu)   | not (null mcpu)
-                                  , not (any (isInfixOf "-mcpu") (getOpts dflags opt_lc)) ]
-     ++ [("", "-mattr=" ++ attrs) | not (null attrs) ]
-+    ++ [("", "-target-abi=" ++ abi) | not (null abi) ]
-
-   where target = platformMisc_llvmTarget $ platformMisc dflags
-         Just (LlvmTarget _ mcpu mattr) = lookup target (llvmTargets $ llvmConfig dflags)
-@@ -965,6 +966,11 @@ llvmOptions dflags =
-               ++ ["+bmi"     | isBmiEnabled dflags      ]
-               ++ ["+bmi2"    | isBmi2Enabled dflags     ]
-
-+        abi :: String
-+        abi = case platformArch (targetPlatform dflags) of
-+             ArchRISCV64 -> "lp64d"
-+             _           -> ""
-+
- -- -----------------------------------------------------------------------------
- -- | Each phase in the pipeline returns the next phase to execute, and the
- -- name of the file in which the output was placed.
-diff --git a/compiler/GHC/Platform/RISCV64.hs b/compiler/GHC/Platform/RISCV64.hs
-new file mode 100644
-index 0000000000..289e2e27a8
---- /dev/null
-+++ b/compiler/GHC/Platform/RISCV64.hs
-@@ -0,0 +1,9 @@
-+{-# LANGUAGE CPP #-}
-+
-+module GHC.Platform.RISCV64 where
-+
-+import GHC.Prelude
-+
-+#define MACHREGS_NO_REGS 0
-+#define MACHREGS_riscv64 1
-+#include "../../../includes/CodeGen.Platform.hs"
-diff --git a/compiler/GHC/Platform/Regs.hs b/compiler/GHC/Platform/Regs.hs
-index 1bf21370c7..e0bdf5d6e5 100644
---- a/compiler/GHC/Platform/Regs.hs
-+++ b/compiler/GHC/Platform/Regs.hs
-@@ -15,6 +15,7 @@ import qualified GHC.Platform.S390X      as S390X
- import qualified GHC.Platform.SPARC      as SPARC
- import qualified GHC.Platform.X86        as X86
- import qualified GHC.Platform.X86_64     as X86_64
-+import qualified GHC.Platform.RISCV64    as RISCV64
- import qualified GHC.Platform.NoRegs     as NoRegs
-
- -- | Returns 'True' if this global register is stored in a caller-saves
-@@ -31,6 +32,7 @@ callerSaves platform
-    ArchSPARC   -> SPARC.callerSaves
-    ArchARM {}  -> ARM.callerSaves
-    ArchAArch64 -> AArch64.callerSaves
-+   ArchRISCV64 -> RISCV64.callerSaves
-    arch
-     | arch `elem` [ArchPPC, ArchPPC_64 ELF_V1, ArchPPC_64 ELF_V2] ->
-         PPC.callerSaves
-@@ -53,6 +55,7 @@ activeStgRegs platform
-    ArchSPARC   -> SPARC.activeStgRegs
-    ArchARM {}  -> ARM.activeStgRegs
-    ArchAArch64 -> AArch64.activeStgRegs
-+   ArchRISCV64 -> RISCV64.activeStgRegs
-    arch
-     | arch `elem` [ArchPPC, ArchPPC_64 ELF_V1, ArchPPC_64 ELF_V2] ->
-         PPC.activeStgRegs
-@@ -70,6 +73,7 @@ haveRegBase platform
-    ArchSPARC   -> SPARC.haveRegBase
-    ArchARM {}  -> ARM.haveRegBase
-    ArchAArch64 -> AArch64.haveRegBase
-+   ArchRISCV64 -> RISCV64.haveRegBase
-    arch
-     | arch `elem` [ArchPPC, ArchPPC_64 ELF_V1, ArchPPC_64 ELF_V2] ->
-         PPC.haveRegBase
-@@ -87,6 +91,7 @@ globalRegMaybe platform
-    ArchSPARC   -> SPARC.globalRegMaybe
-    ArchARM {}  -> ARM.globalRegMaybe
-    ArchAArch64 -> AArch64.globalRegMaybe
-+   ArchRISCV64 -> RISCV64.globalRegMaybe
-    arch
-     | arch `elem` [ArchPPC, ArchPPC_64 ELF_V1, ArchPPC_64 ELF_V2] ->
-         PPC.globalRegMaybe
-@@ -104,6 +109,7 @@ freeReg platform
-    ArchSPARC   -> SPARC.freeReg
-    ArchARM {}  -> ARM.freeReg
-    ArchAArch64 -> AArch64.freeReg
-+   ArchRISCV64 -> RISCV64.freeReg
-    arch
-     | arch `elem` [ArchPPC, ArchPPC_64 ELF_V1, ArchPPC_64 ELF_V2] ->
-         PPC.freeReg
-diff --git a/compiler/ghc.cabal.in b/compiler/ghc.cabal.in
-index de53f7f548..483a601602 100644
---- a/compiler/ghc.cabal.in
-+++ b/compiler/ghc.cabal.in
-@@ -261,6 +261,7 @@ Library
-         GHC.Platform.AArch64
-         GHC.Platform.NoRegs
-         GHC.Platform.PPC
-+        GHC.Platform.RISCV64
-         GHC.Platform.S390X
-         GHC.Platform.SPARC
-         GHC.Platform.X86
-diff --git a/configure.ac b/configure.ac
-index 20911ae43f..b017d50bd6 100644
---- a/configure.ac
-+++ b/configure.ac
-@@ -283,7 +283,7 @@ dnl --------------------------------------------------------------
-
- AC_MSG_CHECKING(whether target supports a registerised ABI)
- case "$TargetArch" in
--    i386|x86_64|powerpc|powerpc64|powerpc64le|s390x|arm|aarch64)
-+    i386|x86_64|powerpc|powerpc64|powerpc64le|s390x|arm|aarch64|riscv64)
-         UnregisterisedDefault=NO
-         AC_MSG_RESULT([yes])
-         ;;
-@@ -318,7 +318,7 @@ AC_MSG_CHECKING(whether target supports tables next to code)
- case "$Unregisterised" in
-     NO)
-         case "$TargetArch" in
--            ia64|powerpc64|powerpc64le|s390x)
-+            ia64|powerpc64|powerpc64le|s390x|riscv64)
-                 TablesNextToCodeDefault=NO
-                 AC_MSG_RESULT([no])
-                 ;;
-@@ -347,7 +347,7 @@ AC_SUBST(TablesNextToCode)
- dnl ** Does target have runtime linker support?
- dnl --------------------------------------------------------------
- case "$target" in
--    powerpc64-*|powerpc64le-*|powerpc-ibm-aix*|s390x-ibm-linux)
-+    powerpc64-*|powerpc64le-*|powerpc-ibm-aix*|s390x-ibm-linux|riscv64-*)
-         TargetHasRTSLinker=NO
-         ;;
-     *)
-diff --git a/includes/CodeGen.Platform.hs b/includes/CodeGen.Platform.hs
-index b00acfa38a..8c942662e6 100644
---- a/includes/CodeGen.Platform.hs
-+++ b/includes/CodeGen.Platform.hs
-@@ -380,6 +380,74 @@ import GHC.Platform.Reg
- # define f14 30
- # define f15 31
-
-+#elif defined(MACHREGS_riscv64)
-+
-+# define zero 0
-+# define ra   1
-+# define sp   2
-+# define gp   3
-+# define tp   4
-+# define t0   5
-+# define t1   6
-+# define t2   7
-+# define s0   8
-+# define s1   9
-+# define a0  10
-+# define a1  11
-+# define a2  12
-+# define a3  13
-+# define a4  14
-+# define a5  15
-+# define a6  16
-+# define a7  17
-+# define s2  18
-+# define s3  19
-+# define s4  20
-+# define s5  21
-+# define s6  22
-+# define s7  23
-+# define s8  24
-+# define s9  25
-+# define s10 26
-+# define s11 27
-+# define t3  28
-+# define t4  29
-+# define t5  30
-+# define t6  31
-+
-+# define ft0  32
-+# define ft1  33
-+# define ft2  34
-+# define ft3  35
-+# define ft4  36
-+# define ft5  37
-+# define ft6  38
-+# define ft7  39
-+# define fs0  40
-+# define fs1  41
-+# define fa0  42
-+# define fa1  43
-+# define fa2  44
-+# define fa3  45
-+# define fa4  46
-+# define fa5  47
-+# define fa6  48
-+# define fa7  49
-+# define fs2  50
-+# define fs3  51
-+# define fs4  52
-+# define fs5  53
-+# define fs6  54
-+# define fs7  55
-+# define fs8  56
-+# define fs9  57
-+# define fs10 58
-+# define fs11 59
-+# define ft8  60
-+# define ft9  61
-+# define ft10 62
-+# define ft11 63
-+
- #endif
-
- callerSaves :: GlobalReg -> Bool
-@@ -667,7 +735,7 @@ globalRegMaybe :: GlobalReg -> Maybe RealReg
- #if defined(MACHREGS_i386) || defined(MACHREGS_x86_64) \
-     || defined(MACHREGS_sparc) || defined(MACHREGS_powerpc) \
-     || defined(MACHREGS_arm) || defined(MACHREGS_aarch64) \
--    || defined(MACHREGS_s390x)
-+    || defined(MACHREGS_s390x) || defined(MACHREGS_riscv64)
- # if defined(REG_Base)
- globalRegMaybe BaseReg                  = Just (RealRegSingle REG_Base)
- # endif
-diff --git a/includes/stg/MachRegs.h b/includes/stg/MachRegs.h
-index be7b7d60b4..1a9012e7ef 100644
---- a/includes/stg/MachRegs.h
-+++ b/includes/stg/MachRegs.h
-@@ -663,6 +663,68 @@ the stack. See Note [Overlapping global registers] for implications.
- #define CALLER_SAVES_D5
- #define CALLER_SAVES_D6
-
-+/* -----------------------------------------------------------------------------
-+   The riscv64 register mapping
-+
-+   Register    | Role(s)                                 | Call effect
-+   ------------+-----------------------------------------+-------------
-+   zero        | Hard-wired zero                         | -
-+   ra          | Return address                          | caller-saved
-+   sp          | Stack pointer                           | callee-saved
-+   gp          | Global pointer                          | callee-saved
-+   tp          | Thread pointer                          | callee-saved
-+   t0,t1,t2    | -                                       | caller-saved
-+   s0          | Frame pointer                           | callee-saved
-+   s1          | -                                       | callee-saved
-+   a0,a1       | Arguments / return values               | caller-saved
-+   a2..a7      | Arguments                               | caller-saved
-+   s2..s11     | -                                       | callee-saved
-+   t3..t6      | -                                       | caller-saved
-+   ft0..ft7    | -                                       | caller-saved
-+   fs0,fs1     | -                                       | callee-saved
-+   fa0,fa1     | Arguments / return values               | caller-saved
-+   fa2..fa7    | Arguments                               | caller-saved
-+   fs2..fs11   | -                                       | callee-saved
-+   ft8..ft11   | -                                       | caller-saved
-+
-+   Each general purpose register as well as each floating-point
-+   register is 64 bits wide.
-+
-+   -------------------------------------------------------------------------- */
-+
-+#elif defined(MACHREGS_riscv64)
-+
-+#define REG(x) __asm__(#x)
-+
-+#define REG_Base        s1
-+#define REG_Sp          s2
-+#define REG_Hp          s3
-+#define REG_R1          s4
-+#define REG_R2          s5
-+#define REG_R3          s6
-+#define REG_R4          s7
-+#define REG_R5          s8
-+#define REG_R6          s9
-+#define REG_R7          s10
-+#define REG_SpLim       s11
-+
-+#define REG_F1          fs0
-+#define REG_F2          fs1
-+#define REG_F3          fs2
-+#define REG_F4          fs3
-+#define REG_F5          fs4
-+#define REG_F6          fs5
-+
-+#define REG_D1          fs6
-+#define REG_D2          fs7
-+#define REG_D3          fs8
-+#define REG_D4          fs9
-+#define REG_D5          fs10
-+#define REG_D6          fs11
-+
-+#define MAX_REAL_FLOAT_REG   6
-+#define MAX_REAL_DOUBLE_REG  6
-+
- #else
-
- #error Cannot find platform to give register info for
-diff --git a/includes/stg/MachRegsForHost.h b/includes/stg/MachRegsForHost.h
-index 3597b2be90..e902d528f6 100644
---- a/includes/stg/MachRegsForHost.h
-+++ b/includes/stg/MachRegsForHost.h
-@@ -71,6 +71,10 @@
- #define MACHREGS_s390x    1
- #endif
-
-+#if defined(riscv64_HOST_ARCH)
-+#define MACHREGS_riscv64  1
-+#endif
-+
- #endif
-
- #include "MachRegs.h"
-diff --git a/includes/stg/SMP.h b/includes/stg/SMP.h
-index 389dd95c88..f12fd3f71b 100644
---- a/includes/stg/SMP.h
-+++ b/includes/stg/SMP.h
-@@ -377,6 +377,8 @@ write_barrier(void) {
-     __asm__ __volatile__ ("" : : : "memory");
- #elif defined(arm_HOST_ARCH) || defined(aarch64_HOST_ARCH)
-     __asm__ __volatile__ ("dmb  st" : : : "memory");
-+#elif defined(riscv64_HOST_ARCH)
-+    __asm__ __volatile__ ("fence w,w" : : : "memory");
- #else
- #error memory barriers unimplemented on this architecture
- #endif
-@@ -401,6 +403,8 @@ store_load_barrier(void) {
-     __asm__ __volatile__ ("dmb" : : : "memory");
- #elif defined(aarch64_HOST_ARCH)
-     __asm__ __volatile__ ("dmb sy" : : : "memory");
-+#elif defined(riscv64_HOST_ARCH)
-+    __asm__ __volatile__ ("fence w,r" : : : "memory");
- #else
- #error memory barriers unimplemented on this architecture
- #endif
-@@ -426,6 +430,8 @@ load_load_barrier(void) {
-     __asm__ __volatile__ ("dmb" : : : "memory");
- #elif defined(aarch64_HOST_ARCH)
-     __asm__ __volatile__ ("dmb sy" : : : "memory");
-+#elif defined(riscv64_HOST_ARCH)
-+    __asm__ __volatile__ ("fence w,r" : : : "memory");
- #else
- #error memory barriers unimplemented on this architecture
- #endif
-diff --git a/libraries/ghc-boot/GHC/Platform.hs b/libraries/ghc-boot/GHC/Platform.hs
-index 186f8c8af6..44d2c68c0a 100644
---- a/libraries/ghc-boot/GHC/Platform.hs
-+++ b/libraries/ghc-boot/GHC/Platform.hs
-@@ -130,6 +130,7 @@ data Arch
-         | ArchAlpha
-         | ArchMipseb
-         | ArchMipsel
-+        | ArchRISCV64
-         | ArchJavaScript
-         deriving (Read, Show, Eq)
-
-@@ -171,6 +172,7 @@ stringEncodeArch = \case
-   ArchAlpha -> "alpha"
-   ArchMipseb -> "mipseb"
-   ArchMipsel -> "mipsel"
-+  ArchRISCV64 -> "riscv64"
-   ArchJavaScript -> "js"
-
- isARM :: Arch -> Bool
-@@ -338,6 +340,7 @@ platformCConvNeedsExtension :: Platform -> Bool
- platformCConvNeedsExtension platform = case platformArch platform of
-   ArchPPC_64 _ -> True
-   ArchS390X    -> True
-+  ArchRISCV64  -> True
-   _            -> False
-
-
-diff --git a/libraries/ghci/GHCi/InfoTable.hsc b/libraries/ghci/GHCi/InfoTable.hsc
-index ad4eb4d6a8..1d1f8cd074 100644
---- a/libraries/ghci/GHCi/InfoTable.hsc
-+++ b/libraries/ghci/GHCi/InfoTable.hsc
-@@ -73,6 +73,7 @@ data Arch = ArchSPARC
-           | ArchPPC64
-           | ArchPPC64LE
-           | ArchS390X
-+          | ArchRISCV64
-  deriving Show
-
- mkJumpToAddr :: MonadFail m => EntryFunPtr-> m ItblCodes
-@@ -109,6 +110,8 @@ mArch =
-        Just ArchPPC64LE
- #elif defined(s390x_HOST_ARCH)
-        Just ArchS390X
-+#elif defined(riscv64_HOST_ARCH)
-+        Just ArchRISCV64
- #else
-        Nothing
- #endif
-@@ -288,6 +291,15 @@ mkJumpToAddr' platform a = case platform of
-                   0xC0, 0x19, byte3 w64, byte2 w64, byte1 w64, byte0 w64,
-                   0x07, 0xF1 ]
-
-+    ArchRISCV64 ->
-+        let w64 = fromIntegral (funPtrToInt a) :: Word64
-+        in Right [ 0x00000297          -- auipc t0,0
-+                 , 0x01053283          -- ld    t0,16(t0)
-+                 , 0x00028067          -- jr    t0
-+                 , 0x00000013          -- nop
-+                 , fromIntegral w64
-+                 , fromIntegral (w64 `shiftR` 32) ]
-+
- byte0 :: (Integral w) => w -> Word8
- byte0 w = fromIntegral w
-
-diff --git a/llvm-targets b/llvm-targets
-index c328b2e001..0f809b2418 100644
---- a/llvm-targets
-+++ b/llvm-targets
-@@ -38,6 +38,8 @@
- ,("powerpc64le-unknown-linux-musl", ("e-m:e-i64:64-n32:64", "ppc64le", "+secure-plt"))
- ,("powerpc64le-unknown-linux", ("e-m:e-i64:64-n32:64", "ppc64le", ""))
- ,("s390x-ibm-linux", ("E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-a:8:16-n32:64", "z10", ""))
-+,("riscv64-unknown-linux-gnu", ("e-m:e-p:64:64-i64:64-i128:128-n64-S128", "", "+m +a +f +d +c +relax"))
-+,("riscv64-unknown-linux", ("e-m:e-p:64:64-i64:64-i128:128-n64-S128", "", "+m +a +f +d +c +relax"))
- ,("i386-apple-darwin", ("e-m:o-p:32:32-p270:32:32-p271:32:32-p272:64:64-f64:32:64-f80:128-n8:16:32-S128", "penryn", ""))
- ,("x86_64-apple-darwin", ("e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128", "penryn", ""))
- ,("arm64-apple-darwin", ("e-m:o-i64:64-i128:128-n32:64-S128", "apple-a12", "+v8.3a +fp-armv8 +neon +crc +crypto +fullfp16 +ras +lse +rdm +rcpc +zcm +zcz +sha2 +aes"))
-diff --git a/m4/fptools.m4 b/m4/fptools.m4
-index 8c6c9b7062..7dbe53d3b4 100644
---- a/m4/fptools.m4
-+++ b/m4/fptools.m4
-@@ -231,7 +231,10 @@ AC_DEFUN([FPTOOLS_SET_HASKELL_PLATFORM_VARS],
-         mipsel)
-             test -z "[$]2" || eval "[$]2=ArchMipsel"
-             ;;
--        hppa|hppa1_1|ia64|m68k|nios2|riscv32|riscv64|rs6000|s390|sh4|vax)
-+        riscv64)
-+            test -z "[$]2" || eval "[$]2=ArchRISCV64"
-+            ;;
-+        hppa|hppa1_1|ia64|m68k|nios2|riscv32|rs6000|s390|sh4|vax)
-             test -z "[$]2" || eval "[$]2=ArchUnknown"
-             ;;
-         *)
-diff --git a/mk/config.mk.in b/mk/config.mk.in
-index 48b8e23145..e260730991 100644
---- a/mk/config.mk.in
-+++ b/mk/config.mk.in
-@@ -179,7 +179,7 @@ ifeq "$(TargetArch_CPP)" "arm"
- # We don't support load/store barriers pre-ARMv7. See #10433.
- ArchSupportsSMP=$(if $(filter $(ARM_ISA),ARMv5 ARMv6),NO,YES)
- else
--ArchSupportsSMP=$(strip $(patsubst $(TargetArch_CPP), YES, $(findstring $(TargetArch_CPP), i386 x86_64 sparc powerpc powerpc64 powerpc64le s390x aarch64)))
-+ArchSupportsSMP=$(strip $(patsubst $(TargetArch_CPP), YES, $(findstring $(TargetArch_CPP), i386 x86_64 sparc powerpc powerpc64 powerpc64le s390x aarch64 riscv64)))
- endif
-
- # The THREADED_RTS requires `BaseReg` to be in a register and the
-diff --git a/rts/StgCRunAsm.S b/rts/StgCRunAsm.S
-index 60f1bf9a13..16b125a7e8 100644
---- a/rts/StgCRunAsm.S
-+++ b/rts/StgCRunAsm.S
-@@ -232,6 +232,150 @@ StgReturn:
- 	.size StgReturn, .-StgReturn
-
- 	.section	.note.GNU-stack,"",@progbits
-+
-+#elif defined(riscv64_HOST_ARCH)
-+# define STACK_FRAME_SIZE (RESERVED_C_STACK_BYTES+208)
-+       .text
-+       .align 1
-+       .globl StgRun
-+       .type StgRun, @function
-+StgRun:
-+       .cfi_startproc
-+       addi    sp,sp,-208
-+       .cfi_def_cfa_offset 208
-+       /* save callee-saved registers */
-+       sd ra,200(sp)
-+       sd s0,192(sp)
-+       sd s1,184(sp)
-+       sd s2,176(sp)
-+       sd s3,168(sp)
-+       sd s4,160(sp)
-+       sd s5,152(sp)
-+       sd s6,144(sp)
-+       sd s7,136(sp)
-+       sd s8,128(sp)
-+       sd s9,120(sp)
-+       sd s10,112(sp)
-+       sd s11,104(sp)
-+       fsd fs0,88(sp)
-+       fsd fs1,80(sp)
-+       fsd fs2,72(sp)
-+       fsd fs3,64(sp)
-+       fsd fs4,56(sp)
-+       fsd fs5,48(sp)
-+       fsd fs6,40(sp)
-+       fsd fs7,32(sp)
-+       fsd fs8,24(sp)
-+       fsd fs9,16(sp)
-+       fsd fs10,8(sp)
-+       fsd fs11,0(sp)
-+       /* allocate stack frame */
-+       li t0,RESERVED_C_STACK_BYTES
-+       sub sp,sp,t0
-+       .cfi_def_cfa_offset STACK_FRAME_SIZE
-+       .cfi_offset 1, -8
-+       .cfi_offset 8, -16
-+       .cfi_offset 9, -24
-+       .cfi_offset 18, -32
-+       .cfi_offset 19, -40
-+       .cfi_offset 20, -48
-+       .cfi_offset 21, -56
-+       .cfi_offset 22, -64
-+       .cfi_offset 23, -72
-+       .cfi_offset 24, -80
-+       .cfi_offset 25, -88
-+       .cfi_offset 26, -96
-+       .cfi_offset 27, -104
-+       .cfi_offset 40, -120
-+       .cfi_offset 41, -128
-+       .cfi_offset 50, -136
-+       .cfi_offset 51, -144
-+       .cfi_offset 52, -152
-+       .cfi_offset 53, -160
-+       .cfi_offset 54, -168
-+       .cfi_offset 55, -176
-+       .cfi_offset 56, -184
-+       .cfi_offset 57, -192
-+       .cfi_offset 58, -200
-+       .cfi_offset 59, -208
-+       /* set STGs BaseReg from RISCV a1 */
-+        mv s1,a1
-+       /* jump to STG function */
-+        jr a0
-+       .cfi_endproc
-+       .size StgRun, .-StgRun
-+
-+       .text
-+       .align 1
-+       .globl StgReturn
-+       .type StgReturn, @function
-+StgReturn:
-+       .cfi_startproc
-+       /* set return value from STGs R1 (RISCV s4) */
-+       mv a0,s4
-+       /* deallocate stack frame */
-+       li t0,RESERVED_C_STACK_BYTES
-+       add sp,sp,t0
-+       .cfi_def_cfa_offset 208
-+       /* restore callee-saved registers */
-+       ld      ra,200(sp)
-+       .cfi_restore 1
-+       ld      s0,192(sp)
-+       .cfi_restore 8
-+       ld      s1,184(sp)
-+       .cfi_restore 9
-+       ld      s2,176(sp)
-+       .cfi_restore 18
-+       ld      s3,168(sp)
-+       .cfi_restore 19
-+       ld      s4,160(sp)
-+       .cfi_restore 20
-+       ld      s5,152(sp)
-+       .cfi_restore 21
-+       ld      s6,144(sp)
-+       .cfi_restore 22
-+       ld      s7,136(sp)
-+       .cfi_restore 23
-+       ld      s8,128(sp)
-+       .cfi_restore 24
-+       ld      s9,120(sp)
-+       .cfi_restore 25
-+       ld      s10,112(sp)
-+       .cfi_restore 26
-+       ld      s11,104(sp)
-+       .cfi_restore 27
-+       fld     fs0,88(sp)
-+       .cfi_restore 40
-+       fld     fs1,80(sp)
-+       .cfi_restore 41
-+       fld     fs2,72(sp)
-+       .cfi_restore 50
-+       fld     fs3,64(sp)
-+       .cfi_restore 51
-+       fld     fs4,56(sp)
-+       .cfi_restore 52
-+       fld     fs5,48(sp)
-+       .cfi_restore 53
-+       fld     fs6,40(sp)
-+       .cfi_restore 54
-+       fld     fs7,32(sp)
-+       .cfi_restore 55
-+       fld     fs8,24(sp)
-+       .cfi_restore 56
-+       fld     fs9,16(sp)
-+       .cfi_restore 57
-+       fld     fs10,8(sp)
-+       .cfi_restore 58
-+       fld     fs11,0(sp)
-+       .cfi_restore 59
-+       addi    sp,sp,208
-+       .cfi_def_cfa_offset 0
-+       /* jump back to caller of StgRun() */
-+       ret
-+       .cfi_endproc
-+       .size StgReturn, .-StgReturn
-+
-+       .section        .note.GNU-stack,"",@progbits
- #endif
-
- #endif /* !USE_MINIINTERPRETER */
-diff --git a/rts/linker/Elf.c b/rts/linker/Elf.c
-index 1da69d03fa..0aa1c8dd3f 100644
---- a/rts/linker/Elf.c
-+++ b/rts/linker/Elf.c
-@@ -412,6 +412,12 @@ ocVerifyImage_ELF ( ObjectCode* oc )
- #endif
- #if defined(EM_AARCH64)
-       case EM_AARCH64: IF_DEBUG(linker,debugBelch( "aarch64" )); break;
-+#endif
-+#if defined(EM_RISCV)
-+      case EM_RISCV:   IF_DEBUG(linker,debugBelch( "riscv" ));
-+          errorBelch("%s: RTS linker not implemented on riscv",
-+                     oc->fileName);
-+          return 0;
- #endif
-        default:       IF_DEBUG(linker,debugBelch( "unknown" ));
-                      errorBelch("%s: unknown architecture (e_machine == %d)"
-diff --git a/utils/genapply/Main.hs b/utils/genapply/Main.hs
-index a6d944efa4..a5697b427f 100644
---- a/utils/genapply/Main.hs
-+++ b/utils/genapply/Main.hs
-@@ -17,6 +17,8 @@ module Main(main) where
- -- We improperly include *HOST* macros for our target...
- #include "../../includes/ghcconfig.h"
-
-+#undef UnregisterisedCompiler
-+
- -- ...so that this header defines the right stuff.  It is the RTS's host, but
- -- our target, as we are generating code that uses that RTS.
- #include "../../includes/stg/MachRegsForHost.h"
-diff --git a/utils/llvm-targets/gen-data-layout.sh b/utils/llvm-targets/gen-data-layout.sh
-index 32032cb97e..092e0892e5 100755
---- a/utils/llvm-targets/gen-data-layout.sh
-+++ b/utils/llvm-targets/gen-data-layout.sh
-@@ -76,6 +76,9 @@ TARGETS=(
-     "powerpc64le-unknown-linux"
-     # Linux s390x
-     "s390x-ibm-linux"
-+    # Linux riscv64
-+    "riscv64-unknown-linux-gnu"
-+    "riscv64-unknown-linux"
-
-     #########################
-     # Darwin