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Unified Diff: gcc/testsuite/gcc.target/i386/patch-functions-force-patching.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-force-patching.c
diff --git a/gcc/testsuite/gcc.target/i386/patch-functions-force-patching.c b/gcc/testsuite/gcc.target/i386/patch-functions-force-patching.c
new file mode 100644
index 0000000..86ad159
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/patch-functions-force-patching.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target lp64 } */
+/* { dg-options "-O3 -mpatch-functions-for-instrumentation -mno-patch-functions-main-always" } */
+
+/* Functions which have the always_patch attribute should be patched no matter
+ what. Check that there are nop-bytes at the beginning and end of the
+ function. We add -O3 so that the compiler will try to inline foo (but it
+ will be blocked by the attribute). */
+
+/* { dg-final { scan-assembler ".byte\t0xeb,0x09(.*).byte\t0x90" } } */
+/* { dg-final { scan-assembler "ret(.*).byte\t0x90(.*).byte\t0x90" } } */
+
+__attribute__ ((always_patch_for_instrumentation))
+static int foo () {
+ return 3;
+}
+
+int main () {
+ volatile int x = foo ();
+}

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