--- src/recompiler/Makefile.kmk
+++ src/recompiler/Makefile.kmk
@@ -231,9 +231,9 @@
 
 # Extra flags for these source modules.
 target-i386/op.c_CFLAGS         = -O2 -fno-strict-aliasing -fomit-frame-pointer -falign-functions=0 -fno-reorder-blocks -fno-optimize-sibling-calls
-target-i386/op.c_CFLAGS.x86     = -fno-gcse -fno-instrument-functions -mpreferred-stack-boundary=2
+target-i386/op.c_CFLAGS.x86     = -O3 -fno-gcse -fno-instrument-functions -mpreferred-stack-boundary=2
 target-i386/op.c_CFLAGS.darwin.x86 = -m128bit-long-double -mpreferred-stack-boundary=4
-target-i386/helper.c_CFLAGS.x86 = -O2 -fomit-frame-pointer -fno-strict-aliasing -fno-gcse
+target-i386/helper.c_CFLAGS.x86 = -O3 -fomit-frame-pointer -fno-strict-aliasing -fno-gcse
 cpu-exec.c_CFLAGS.x86           = -O2 -fomit-frame-pointer -fno-strict-aliasing -fno-gcse