diff --git a/src/intel/compiler/brw_fs.cpp b/src/intel/compiler/brw_fs.cpp
index 9fc29ba97f6..575aba155eb 100644
--- a/src/intel/compiler/brw_fs.cpp
+++ b/src/intel/compiler/brw_fs.cpp
@@ -838,6 +838,23 @@ bool brw_should_print_shader(const nir_shader *shader, uint64_t debug_flag)
    return INTEL_DEBUG(debug_flag) && (!shader->info.internal || NIR_DEBUG(PRINT_INTERNAL));
 }
 
+static unsigned
+brw_allocate_vgrf_number(fs_visitor &s, unsigned size_in_REGSIZE_units)
+{
+   assert(size_in_REGSIZE_units > 0);
+
+   if (s.alloc.capacity <= s.alloc.count) {
+      unsigned new_cap = MAX2(16, s.alloc.capacity * 2);
+      s.alloc.sizes = rerzalloc(s.mem_ctx, s.alloc.sizes, unsigned,
+                                s.alloc.capacity, new_cap);
+      s.alloc.capacity = new_cap;
+   }
+
+   s.alloc.sizes[s.alloc.count] = size_in_REGSIZE_units;
+
+   return s.alloc.count++;
+}
+
 brw_reg
 brw_allocate_vgrf(fs_visitor &s, brw_reg_type type, unsigned count)
 {
@@ -850,6 +867,6 @@ brw_allocate_vgrf(fs_visitor &s, brw_reg_type type, unsigned count)
 brw_reg
 brw_allocate_vgrf_units(fs_visitor &s, unsigned units_of_REGSIZE)
 {
-   return brw_vgrf(s.alloc.allocate(units_of_REGSIZE), BRW_TYPE_UD);
+   return brw_vgrf(brw_allocate_vgrf_number(s, units_of_REGSIZE), BRW_TYPE_UD);
 }
 
diff --git a/src/intel/compiler/brw_fs.h b/src/intel/compiler/brw_fs.h
index 0e39bfc57c5..27e490b448a 100644
--- a/src/intel/compiler/brw_fs.h
+++ b/src/intel/compiler/brw_fs.h
@@ -31,7 +31,6 @@
 #include "brw_cfg.h"
 #include "brw_compiler.h"
 #include "brw_inst.h"
-#include "brw_ir_allocator.h"
 #include "compiler/nir/nir.h"
 #include "brw_analysis.h"
 
@@ -226,7 +225,16 @@ public:
    gl_shader_stage stage;
    bool debug_enabled;
 
-   brw::simple_allocator alloc;
+   /* VGRF allocation. */
+   struct {
+      /** Array of sizes for each allocation, in REG_SIZE units. */
+      unsigned *sizes;
+
+      /** Total number of VGRFs allocated. */
+      unsigned count;
+
+      unsigned capacity;
+   } alloc;
 
    const brw_base_prog_key *const key;
 
diff --git a/src/intel/compiler/brw_fs_visitor.cpp b/src/intel/compiler/brw_fs_visitor.cpp
index b3e7cc73d11..8f16aea6bc6 100644
--- a/src/intel/compiler/brw_fs_visitor.cpp
+++ b/src/intel/compiler/brw_fs_visitor.cpp
@@ -446,6 +446,10 @@ fs_visitor::init()
 
    this->gs.control_data_bits_per_vertex = 0;
    this->gs.control_data_header_size_bits = 0;
+
+   this->alloc.capacity = 0;
+   this->alloc.sizes = NULL;
+   this->alloc.count = 0;
 }
 
 fs_visitor::~fs_visitor()
diff --git a/src/intel/compiler/brw_inst.cpp b/src/intel/compiler/brw_inst.cpp
index 637f602dd6f..3e80d8f57ab 100644
--- a/src/intel/compiler/brw_inst.cpp
+++ b/src/intel/compiler/brw_inst.cpp
@@ -3,6 +3,7 @@
  * SPDX-License-Identifier: MIT
  */
 
+#include "brw_fs.h"
 #include "brw_eu.h"
 #include "brw_fs.h"
 #include "brw_cfg.h"
diff --git a/src/intel/compiler/brw_ir_allocator.h b/src/intel/compiler/brw_ir_allocator.h
deleted file mode 100644
index 85bd1e69bef..00000000000
--- a/src/intel/compiler/brw_ir_allocator.h
+++ /dev/null
@@ -1,76 +0,0 @@
-/* -*- c++ -*- */
-/*
- * Copyright © 2010-2014 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
- * IN THE SOFTWARE.
- */
-
-#pragma once
-
-#include "util/compiler.h"
-#include "util/glheader.h"
-#include "util/macros.h"
-#include "util/rounding.h"
-#include "util/u_math.h"
-
-namespace brw {
-   /**
-    * Simple allocator used to keep track of virtual GRFs.
-    */
-   class simple_allocator {
-   public:
-      simple_allocator() :
-         sizes(NULL), count(0), capacity(0)
-      {
-      }
-
-      ~simple_allocator()
-      {
-         free(sizes);
-      }
-
-      unsigned
-      allocate(unsigned size)
-      {
-         assert(size > 0);
-         if (capacity <= count) {
-            capacity = MAX2(16, capacity * 2);
-            sizes = (unsigned *)realloc(sizes, capacity * sizeof(unsigned));
-         }
-
-         sizes[count] = size;
-
-         return count++;
-      }
-
-      /**
-       * Array of sizes for each allocation.  The allocation unit is up to the
-       * back-end, but it's expected to be one scalar value in the FS back-end
-       * and one vec4 in the VEC4 back-end.
-       */
-      unsigned *sizes;
-
-      /** Total number of VGRFs allocated. */
-      unsigned count;
-
-   private:
-      unsigned capacity;
-   };
-}
diff --git a/src/intel/compiler/meson.build b/src/intel/compiler/meson.build
index ba27b974fa4..8cfc3116d67 100644
--- a/src/intel/compiler/meson.build
+++ b/src/intel/compiler/meson.build
@@ -60,7 +60,6 @@ libintel_compiler_brw_files = files(
   'brw_generator.h',
   'brw_inst.cpp',
   'brw_inst.h',
-  'brw_ir_allocator.h',
   'brw_isa_info.h',
   'brw_lower.cpp',
   'brw_lower_dpas.cpp',