diff --git a/lld/COFF/PDB.cpp b/lld/COFF/PDB.cpp
--- a/lld/COFF/PDB.cpp
+++ b/lld/COFF/PDB.cpp
@@ -1185,8 +1185,25 @@
     // Only emit external, defined, live symbols that have a chunk. Static,
     // non-external symbols do not appear in the symbol table.
     auto *def = dyn_cast<Defined>(s);
-    if (def && def->isLive() && def->getChunk())
+    if (def && def->isLive() && def->getChunk()) {
+      // Don't emit a public symbol for coverage data symbols. LLVM code
+      // coverage (and PGO) create a __profd_ and __profc_ symbol for every
+      // function. C++ mangled names are long, and tend to dominate symbol size.
+      // Including these names triples the size of the public stream, which
+      // results in bloated PDB files. These symbols generally are not helpful
+      // for debugging, so suppress them.
+      StringRef name = def->getName();
+      if (name.data()[0] == '_' && name.data()[1] == '_') {
+        // Drop the '_' prefix for x86.
+        if (config->machine == I386)
+          name = name.drop_front(1);
+        if (name.startswith("__profd_") || name.startswith("__profc_") ||
+            name.startswith("__covrec_")) {
+          return;
+        }
+      }
       publics.push_back(createPublic(def));
+    }
   });
 
   if (!publics.empty()) {
diff --git a/lld/test/COFF/pgo-pubs.s b/lld/test/COFF/pgo-pubs.s
new file mode 100644
--- /dev/null
+++ b/lld/test/COFF/pgo-pubs.s
@@ -0,0 +1,71 @@
+# REQUIRES: x86
+# RUN: llvm-mc -triple=x86_64-windows-msvc -filetype=obj -o %t.obj %s
+# RUN: lld-link %t.obj -out:%t.exe -pdb:%t.pdb -debug -entry:main -subsystem:console
+# RUN: llvm-pdbutil dump -publics %t.pdb | FileCheck %s
+
+# Check that there are no __prof[dc] or __covrec public symbols.
+
+# CHECK-NOT: __profd
+# CHECK-NOT: __profc
+# CHECK-NOT: __covrec
+# CHECK: S_PUB32 {{.*}} `main`
+# CHECK-NOT: __profd
+# CHECK-NOT: __profc
+# CHECK-NOT: __covrec
+
+
+# The following assembly is simplified from this C code:
+# int main() {
+#   return 0;
+# }
+
+# Compiled like so:
+# clang-cl -c pgo-pubs.c -fprofile-instr-generate -fcoverage-mapping -clang:-save-temps
+
+
+	.text
+	.intel_syntax noprefix
+	.globl	main                            # -- Begin function main
+main:                                   # @main
+# %bb.0:                                # %entry
+	xor	eax, eax
+	ret
+
+	.section	.lcovfun$M,"dr",discard,__covrec_DB956436E78DD5FAu
+	.globl	__covrec_DB956436E78DD5FAu      # @__covrec_DB956436E78DD5FAu
+	.p2align	3
+__covrec_DB956436E78DD5FAu:
+	.quad	-2624081020897602054            # 0xdb956436e78dd5fa
+	.long	9                               # 0x9
+	.quad	24                              # 0x18
+	.quad	2164039332547799183             # 0x1e08364eb07c288f
+	.ascii	"\001\001\000\001\001\b\f\002\002"
+
+	.section	.lcovmap$M,"dr"
+	.p2align	3                               # @__llvm_coverage_mapping
+.L__llvm_coverage_mapping:
+	.long	0                               # 0x0
+	.long	40                              # 0x28
+	.long	0                               # 0x0
+	.long	5                               # 0x5
+	.ascii	"\002%\000\031C:\\src\\llvm-project\\build\npgo-pubs.i"
+
+	.section	.lprfc$M,"dw"
+	.p2align	3                               # @__profc_main
+__profc_main:
+	.zero	8
+
+	.section	.lprfd$M,"dw"
+	.p2align	3                               # @__profd_main
+__profd_main:
+	.quad	-2624081020897602054            # 0xdb956436e78dd5fa
+	.quad	24                              # 0x18
+	.quad	__profc_main
+	.quad	main
+	.quad	0
+	.long	1                               # 0x1
+	.zero	4
+
+	.section	.lprfn$M,"dr"
+.L__llvm_prf_nm:                        # @__llvm_prf_nm
+	.ascii	"\004\000main"