diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 8ffa641..4f082ee 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -11012,6 +11012,19 @@
   [(set_attr "type" "negnot")
    (set_attr "mode" "<MODE>")])
 
+;; Optimize *negsi_1 followed by *cmpsi_ccno_1 (PR target/91384)
+(define_peephole2
+  [(set (match_operand:SWI 0 "general_reg_operand")
+	(match_operand:SWI 1 "general_reg_operand"))
+   (parallel [(set (match_dup 0) (neg:SWI (match_dup 0)))
+	      (clobber (reg:CC FLAGS_REG))])
+   (set (reg:CCZ FLAGS_REG) (compare:CCZ (match_dup 1) (const_int 0)))]
+  ""
+  [(set (match_dup 0) (match_dup 1))
+   (parallel [(set (reg:CCZ FLAGS_REG)
+		   (compare:CCZ (neg:SWI (match_dup 0)) (const_int 0)))
+	      (set (match_dup 0) (neg:SWI (match_dup 0)))])])
+
 ;; Special expand pattern to handle integer mode abs
 
 (define_expand "abs<mode>2"
diff --git a/gcc/testsuite/gcc.target/i386/pr91384.c b/gcc/testsuite/gcc.target/i386/pr91384.c
new file mode 100644
index 0000000..24a60a9
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr91384.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+void foo (void);
+void bar (void);
+
+int
+test (int a)
+{
+  int r;
+
+  if (r = -a)
+    foo ();
+  else
+    bar ();
+
+  return r;
+}
+
+/* { dg-final { scan-assembler-not "testl" } } */