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Unified Diff: gcc/testsuite/gcc.target/i386/patch-functions-sibling-call.c

Issue 7301068: [google] Port revisions for -mpatch-functions-for-instrumentation option back to google-main.
Patch Set: [google] Port revisions for -mpatch-functions-for-instrumentation option back to google-main. Created 11 years, 1 month ago
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Index: gcc/testsuite/gcc.target/i386/patch-functions-sibling-call.c
diff --git a/gcc/testsuite/gcc.target/i386/patch-functions-sibling-call.c b/gcc/testsuite/gcc.target/i386/patch-functions-sibling-call.c
new file mode 100644
index 0000000..847a95c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/patch-functions-sibling-call.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target lp64 } */
+/* -O2 forces a sibling call. */
+/* { dg-options "-O2 -mpatch-functions-for-instrumentation" } */
+
+/* { dg-final { scan-assembler ".byte\t0xeb,0x09(.*).byte\t0x90" } } */
+
+/* Checks correct nop-bytes are generated just before a sibling call. */
+/* { dg-final { scan-assembler ".byte\t0xeb,0x09(.*).byte\t0x90(.*)jmp" } } */
+
+/* Not instrumented as function has no loop and is small. */
+__attribute__ ((noinline))
+int foo(int n)
+{
+ int x = 0;
+ return n + 10;
+}
+
+__attribute__ ((noinline))
+int bar(int n)
+{
+ /* Dummy loop. */
+ while (--n)
+ n = n * 2;
+ return foo(n);
+}
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