diff --git a/clang/test/Preprocessor/riscv-target-features.c b/clang/test/Preprocessor/riscv-target-features.c
--- a/clang/test/Preprocessor/riscv-target-features.c
+++ b/clang/test/Preprocessor/riscv-target-features.c
@@ -42,6 +42,7 @@
 // CHECK-NOT: __riscv_svnapot
 // CHECK-NOT: __riscv_svinval
 // CHECK-NOT: __riscv_xventanacondops
+// CHECK-NOT: __riscv_zcf
 
 // RUN: %clang -target riscv32-unknown-linux-gnu -march=rv32im -x c -E -dM %s \
 // RUN: -o - | FileCheck --check-prefix=CHECK-M-EXT %s
@@ -437,3 +438,7 @@
 // RUN: %clang -target riscv64 -march=rv64ixventanacondops -x c -E -dM %s \
 // RUN: -o - | FileCheck --check-prefix=CHECK-XVENTANACONDOPS-EXT %s
 // CHECK-XVENTANACONDOPS-EXT: __riscv_xventanacondops 1000000{{$}}
+
+// RUN: %clang -target riscv32 -march=rv32izcf0p70 -menable-experimental-extensions \
+// RUN: -x c -E -dM %s -o - | FileCheck --check-prefix=CHECK-ZCF-EXT %s
+// CHECK-ZCF-EXT: __riscv_zcf 70000{{$}}
diff --git a/llvm/lib/Support/RISCVISAInfo.cpp b/llvm/lib/Support/RISCVISAInfo.cpp
--- a/llvm/lib/Support/RISCVISAInfo.cpp
+++ b/llvm/lib/Support/RISCVISAInfo.cpp
@@ -111,6 +111,7 @@
     {"zihintntl", RISCVExtensionVersion{0, 2}},
 
     {"zca", RISCVExtensionVersion{0, 70}},
+    {"zcf", RISCVExtensionVersion{0, 70}},
     {"zvfh", RISCVExtensionVersion{0, 1}},
     {"zawrs", RISCVExtensionVersion{1, 0}},
     {"ztso", RISCVExtensionVersion{0, 1}},
diff --git a/llvm/lib/Target/RISCV/RISCV.td b/llvm/lib/Target/RISCV/RISCV.td
--- a/llvm/lib/Target/RISCV/RISCV.td
+++ b/llvm/lib/Target/RISCV/RISCV.td
@@ -292,6 +292,16 @@
                                    "'Zca' (part of the C extension, excluding "
                                    "compressed floating point loads/stores)">;
 
+def FeatureExtZcf
+    : SubtargetFeature<"experimental-zcf", "HasStdExtZcf", "true",
+                       "'Zcf' (Compressed Single-Precision Floating-Point Instructions)">;
+
+def HasStdExtCOrZcf
+    : Predicate<"Subtarget->hasStdExtC() || Subtarget->hasStdExtZcf()">,
+                AssemblerPredicate<(any_of FeatureStdExtC, FeatureExtZcf),
+                                   "'C' (Compressed Instructions) or "
+                                   "'Zcf' (Compressed Single-Precision Floating-Point Instructions)">;
+
 def FeatureNoRVCHints
     : SubtargetFeature<"no-rvc-hints", "EnableRVCHintInstrs", "false",
                        "Disable RVC Hint Instructions.">;
diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfoC.td b/llvm/lib/Target/RISCV/RISCVInstrInfoC.td
--- a/llvm/lib/Target/RISCV/RISCVInstrInfoC.td
+++ b/llvm/lib/Target/RISCV/RISCVInstrInfoC.td
@@ -328,7 +328,7 @@
 }
 
 let DecoderNamespace = "RISCV32Only_",
-    Predicates = [HasStdExtC, HasStdExtF, IsRV32] in
+    Predicates = [HasStdExtCOrZcf, HasStdExtF, IsRV32] in
 def C_FLW  : CLoad_ri<0b011, "c.flw", FPR32C, uimm7_lsb00>,
              Sched<[WriteFLD32, ReadMemBase]> {
   bits<7> imm;
@@ -362,7 +362,7 @@
 }
 
 let DecoderNamespace = "RISCV32Only_",
-    Predicates = [HasStdExtC, HasStdExtF, IsRV32]  in
+    Predicates = [HasStdExtCOrZcf, HasStdExtF, IsRV32]  in
 def C_FSW  : CStore_rri<0b111, "c.fsw", FPR32C, uimm7_lsb00>,
              Sched<[WriteFST32, ReadStoreData, ReadMemBase]> {
   bits<7> imm;
@@ -515,7 +515,7 @@
 }
 
 let DecoderNamespace = "RISCV32Only_",
-    Predicates = [HasStdExtC, HasStdExtF, IsRV32] in
+    Predicates = [HasStdExtCOrZcf, HasStdExtF, IsRV32] in
 def C_FLWSP  : CStackLoad<0b011, "c.flwsp", FPR32, uimm8_lsb00>,
                Sched<[WriteFLD32, ReadMemBase]> {
   let Inst{6-4} = imm{4-2};
@@ -575,7 +575,7 @@
 }
 
 let DecoderNamespace = "RISCV32Only_",
-    Predicates = [HasStdExtC, HasStdExtF, IsRV32] in
+    Predicates = [HasStdExtCOrZcf, HasStdExtF, IsRV32] in
 def C_FSWSP  : CStackStore<0b111, "c.fswsp", FPR32, uimm8_lsb00>,
                Sched<[WriteFST32, ReadStoreData, ReadMemBase]> {
   let Inst{12-9} = imm{5-2};
@@ -733,7 +733,7 @@
 def : InstAlias<"c.sdsp $rs2, (${rs1})", (C_SDSP GPRC:$rs2, SPMem:$rs1, 0)>;
 }
 
-let Predicates = [HasStdExtC, HasStdExtF, IsRV32] in {
+let Predicates = [HasStdExtCOrZcf, HasStdExtF, IsRV32] in {
 def : InstAlias<"c.flw $rd, (${rs1})", (C_FLW FPR32C:$rd, GPRCMem:$rs1, 0)>;
 def : InstAlias<"c.fsw $rs2, (${rs1})", (C_FSW FPR32C:$rs2, GPRCMem:$rs1, 0)>;
 def : InstAlias<"c.flwsp $rd, (${rs1})", (C_FLWSP FPR32C:$rd, SPMem:$rs1, 0)>;
@@ -771,7 +771,7 @@
                   (C_LW GPRC:$rd, GPRCMem:$rs1, uimm7_lsb00:$imm)>;
 } // Predicates = [HasStdExtCOrZca]
 
-let Predicates = [HasStdExtC, HasStdExtF, IsRV32] in {
+let Predicates = [HasStdExtCOrZcf, HasStdExtF, IsRV32] in {
 def : CompressPat<(FLW FPR32C:$rd, GPRCMem:$rs1, uimm7_lsb00:$imm),
                   (C_FLW FPR32C:$rd, GPRCMem:$rs1, uimm7_lsb00:$imm)>;
 } // Predicates = [HasStdExtC, HasStdExtF, IsRV32]
@@ -791,7 +791,7 @@
                   (C_SW GPRC:$rs2, GPRCMem:$rs1, uimm7_lsb00:$imm)>;
 } // Predicates = [HasStdExtCOrZca]
 
-let Predicates = [HasStdExtC, HasStdExtF, IsRV32] in {
+let Predicates = [HasStdExtCOrZcf, HasStdExtF, IsRV32] in {
 def : CompressPat<(FSW FPR32C:$rs2, GPRCMem:$rs1, uimm7_lsb00:$imm),
                   (C_FSW FPR32C:$rs2, GPRCMem:$rs1, uimm7_lsb00:$imm)>;
 } // Predicates = [HasStdExtC, HasStdExtF, IsRV32]
@@ -888,7 +888,7 @@
                   (C_LWSP GPRNoX0:$rd, SPMem:$rs1, uimm8_lsb00:$imm)>;
 } // Predicates = [HasStdExtCOrZca]
 
-let Predicates = [HasStdExtC, HasStdExtF, IsRV32] in {
+let Predicates = [HasStdExtCOrZcf, HasStdExtF, IsRV32] in {
 def : CompressPat<(FLW FPR32:$rd, SPMem:$rs1, uimm8_lsb00:$imm),
                   (C_FLWSP FPR32:$rd, SPMem:$rs1, uimm8_lsb00:$imm)>;
 } // Predicates = [HasStdExtC, HasStdExtF, IsRV32]
@@ -930,7 +930,7 @@
                   (C_SWSP GPR:$rs2, SPMem:$rs1, uimm8_lsb00:$imm)>;
 } // Predicates = [HasStdExtCOrZca]
 
-let Predicates = [HasStdExtC, HasStdExtF, IsRV32] in {
+let Predicates = [HasStdExtCOrZcf, HasStdExtF, IsRV32] in {
 def : CompressPat<(FSW FPR32:$rs2, SPMem:$rs1, uimm8_lsb00:$imm),
                   (C_FSWSP FPR32:$rs2, SPMem:$rs1, uimm8_lsb00:$imm)>;
 } // Predicates = [HasStdExtC, HasStdExtF, IsRV32]
diff --git a/llvm/lib/Target/RISCV/RISCVSubtarget.h b/llvm/lib/Target/RISCV/RISCVSubtarget.h
--- a/llvm/lib/Target/RISCV/RISCVSubtarget.h
+++ b/llvm/lib/Target/RISCV/RISCVSubtarget.h
@@ -56,6 +56,7 @@
   bool HasStdExtZbc = false;
   bool HasStdExtZbs = false;
   bool HasStdExtZca = false;
+  bool HasStdExtZcf = false;
   bool HasStdExtV = false;
   bool HasStdExtZve32x = false;
   bool HasStdExtZve32f = false;
@@ -167,6 +168,7 @@
   bool hasStdExtZbc() const { return HasStdExtZbc; }
   bool hasStdExtZbs() const { return HasStdExtZbs; }
   bool hasStdExtZca() const { return HasStdExtZca; }
+  bool hasStdExtZcf() const { return HasStdExtZcf; }
   bool hasStdExtZvl() const { return ZvlLen != 0; }
   bool hasStdExtZvfh() const { return HasStdExtZvfh; }
   bool hasStdExtZfhmin() const { return HasStdExtZfhmin; }
diff --git a/llvm/test/MC/RISCV/compress-rv32f.s b/llvm/test/MC/RISCV/compress-rv32f.s
--- a/llvm/test/MC/RISCV/compress-rv32f.s
+++ b/llvm/test/MC/RISCV/compress-rv32f.s
@@ -8,6 +8,16 @@
 # RUN: llvm-mc -triple riscv32 -mattr=+c,+f -filetype=obj < %s \
 # RUN:   | llvm-objdump  --triple=riscv32 --mattr=+c,+f -d -M no-aliases - \
 # RUN:   | FileCheck -check-prefixes=CHECK-BYTES,CHECK-INST %s
+# RUN: llvm-mc -triple riscv32 -mattr=+experimental-zcf,+f -show-encoding < %s \
+# RUN:   | FileCheck -check-prefixes=CHECK,CHECK-ALIAS %s
+# RUN: llvm-mc -triple riscv32 -mattr=+experimental-zcf,+f -show-encoding \
+# RUN:   -riscv-no-aliases < %s | FileCheck -check-prefixes=CHECK,CHECK-INST %s
+# RUN: llvm-mc -triple riscv32 -mattr=+experimental-zcf,+f -filetype=obj < %s \
+# RUN:   | llvm-objdump  --triple=riscv32 --mattr=+experimental-zcf,+f -d - \
+# RUN:   | FileCheck -check-prefixes=CHECK-BYTES,CHECK-ALIAS %s
+# RUN: llvm-mc -triple riscv32 -mattr=+experimental-zcf,+f -filetype=obj < %s \
+# RUN:   | llvm-objdump  --triple=riscv32 --mattr=+experimental-zcf,+f -d -M no-aliases - \
+# RUN:   | FileCheck -check-prefixes=CHECK-BYTES,CHECK-INST %s
 
 # Instructions that are 32 bit only.
 flw ft0, 124(sp)
diff --git a/llvm/test/MC/RISCV/rv32fc-valid.s b/llvm/test/MC/RISCV/rv32fc-valid.s
--- a/llvm/test/MC/RISCV/rv32fc-valid.s
+++ b/llvm/test/MC/RISCV/rv32fc-valid.s
@@ -3,41 +3,52 @@
 # RUN: llvm-mc -filetype=obj -triple=riscv32 -mattr=+c,+f < %s \
 # RUN:     | llvm-objdump --mattr=+c,+f -M no-aliases -d -r - \
 # RUN:     | FileCheck --check-prefix=CHECK-ASM-AND-OBJ %s
+# RUN: llvm-mc %s -triple=riscv32 -mattr=+experimental-zcf,+f -riscv-no-aliases -show-encoding \
+# RUN:     | FileCheck -check-prefixes=CHECK-ASM,CHECK-ASM-AND-OBJ %s
+# RUN: llvm-mc -filetype=obj -triple=riscv32 -mattr=+experimental-zcf,+f < %s \
+# RUN:     | llvm-objdump --mattr=+experimental-zcf,+f -M no-aliases -d -r - \
+# RUN:     | FileCheck --check-prefix=CHECK-ASM-AND-OBJ %s
 #
 # RUN: not llvm-mc -triple riscv32 -mattr=+c \
 # RUN:     -riscv-no-aliases -show-encoding < %s 2>&1 \
 # RUN:     | FileCheck -check-prefixes=CHECK-NO-EXT-F %s
+# RUN: not llvm-mc -triple riscv32 -mattr=+experimental-zcf \
+# RUN:     -riscv-no-aliases -show-encoding < %s 2>&1 \
+# RUN:     | FileCheck -check-prefixes=CHECK-NO-EXT-F %s
 # RUN: not llvm-mc -triple riscv32 \
 # RUN:     -riscv-no-aliases -show-encoding < %s 2>&1 \
 # RUN:     | FileCheck -check-prefixes=CHECK-NO-EXT-FC %s
 # RUN: not llvm-mc -triple riscv64 -mattr=+c,+f \
 # RUN:     -riscv-no-aliases -show-encoding < %s 2>&1 \
 # RUN:     | FileCheck -check-prefixes=CHECK-NO-RV32 %s
+# RUN: not llvm-mc -triple riscv64 -mattr=+experimental-zcf,+f \
+# RUN:     -riscv-no-aliases -show-encoding < %s 2>&1 \
+# RUN:     | FileCheck -check-prefixes=CHECK-NO-RV32 %s
 
 # FIXME: error messages for rv64fc are misleading
 
 # CHECK-ASM-AND-OBJ: c.flwsp  fs0, 252(sp)
 # CHECK-ASM: encoding: [0x7e,0x74]
 # CHECK-NO-EXT-F:  error: instruction requires the following: 'F' (Single-Precision Floating-Point){{$}}
-# CHECK-NO-EXT-FC:  error: instruction requires the following: 'C' (Compressed Instructions), 'F' (Single-Precision Floating-Point){{$}}
+# CHECK-NO-EXT-FC:  error: instruction requires the following: 'C' (Compressed Instructions) or 'Zcf' (Compressed Single-Precision Floating-Point Instructions), 'F' (Single-Precision Floating-Point){{$}}
 # CHECK-NO-RV32:  error: instruction requires the following: RV32I Base Instruction Set{{$}}
 c.flwsp  fs0, 252(sp)
 # CHECK-ASM-AND-OBJ: c.fswsp  fa7, 252(sp)
 # CHECK-ASM: encoding: [0xc6,0xff]
 # CHECK-NO-EXT-F:  error: instruction requires the following: 'F' (Single-Precision Floating-Point){{$}}
-# CHECK-NO-EXT-FC:  error: instruction requires the following: 'C' (Compressed Instructions), 'F' (Single-Precision Floating-Point){{$}}
+# CHECK-NO-EXT-FC:  error: instruction requires the following: 'C' (Compressed Instructions) or 'Zcf' (Compressed Single-Precision Floating-Point Instructions), 'F' (Single-Precision Floating-Point){{$}}
 # CHECK-NO-RV32:  error: instruction requires the following: RV32I Base Instruction Set{{$}}
 c.fswsp  fa7, 252(sp)
 
 # CHECK-ASM-AND-OBJ: c.flw  fa3, 124(a5)
 # CHECK-ASM: encoding: [0xf4,0x7f]
 # CHECK-NO-EXT-F:  error: instruction requires the following: 'F' (Single-Precision Floating-Point){{$}}
-# CHECK-NO-EXT-FC:  error: instruction requires the following: 'C' (Compressed Instructions), 'F' (Single-Precision Floating-Point){{$}}
+# CHECK-NO-EXT-FC:  error: instruction requires the following: 'C' (Compressed Instructions) or 'Zcf' (Compressed Single-Precision Floating-Point Instructions), 'F' (Single-Precision Floating-Point){{$}}
 # CHECK-NO-RV32:  error: instruction requires the following: RV32I Base Instruction Set{{$}}
 c.flw  fa3, 124(a5)
 # CHECK-ASM-AND-OBJ: c.fsw  fa2, 124(a1)
 # CHECK-ASM: encoding: [0xf0,0xfd]
 # CHECK-NO-EXT-F:  error: instruction requires the following: 'F' (Single-Precision Floating-Point){{$}}
-# CHECK-NO-EXT-FC:  error: instruction requires the following: 'C' (Compressed Instructions), 'F' (Single-Precision Floating-Point){{$}}
+# CHECK-NO-EXT-FC:  error: instruction requires the following: 'C' (Compressed Instructions) or 'Zcf' (Compressed Single-Precision Floating-Point Instructions), 'F' (Single-Precision Floating-Point){{$}}
 # CHECK-NO-RV32:  error: instruction requires the following: RV32I Base Instruction Set{{$}}
 c.fsw  fa2, 124(a1)