Hi, all
__builtin_ia32_prefetch's op1 should be between 0 and 2. So add an error
handler.
Bootstrapped and regtested on x86_64-pc-linux-gnu, there is a unrelated FAIL
that has yet to be found root cause, just send patch for review.
BRs,
Lin
gcc/ChangeLog:
PR target/117416
* config/i386/i386-expand.cc (ix86_expand_builtin): Raise warning when
op1 isn't in range of (0, 2) and set op1 as const0_rtx;
gcc/testsuite/ChangeLog:
PR target/117416
* gcc.target/i386/pr117416-1.c: New test.
---
gcc/config/i386/i386-expand.cc | 7 +++++++
gcc/testsuite/gcc.target/i386/pr117416-1.c | 12 ++++++++++++
2 files changed, 19 insertions(+)
create mode 100644 gcc/testsuite/gcc.target/i386/pr117416-1.c
diff --git a/gcc/config/i386/i386-expand.cc b/gcc/config/i386/i386-expand.cc
index 515334aa5a3..5dab5859463 100644
--- a/gcc/config/i386/i386-expand.cc
+++ b/gcc/config/i386/i386-expand.cc
@@ -14194,6 +14194,13 @@ ix86_expand_builtin (tree exp, rtx target, rtx
subtarget,
return const0_rtx;
}
+ if (!IN_RANGE (INTVAL (op1), 0, 2))
+ {
+ warning (0, "invalid second argument to"
+ " %<__builtin_ia32_prefetch%>; using zero");
+ op1 = const0_rtx;
+ }
+
if (INTVAL (op3) == 1)
{
if (INTVAL (op2) < 2 || INTVAL (op2) > 3)
diff --git a/gcc/testsuite/gcc.target/i386/pr117416-1.c
b/gcc/testsuite/gcc.target/i386/pr117416-1.c
new file mode 100644
index 00000000000..7062f27e21a
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr117416-1.c
@@ -0,0 +1,12 @@
+/* { dg-do compile } */
+/* { dg-options "-O0" } */
+
+#include <x86intrin.h>
+
+void* p;
+
+void extern
+prefetch_test (void)
+{
+ __builtin_ia32_prefetch (p, 5, 0, 0); /* { dg-warning "invalid second
argument to '__builtin_ia32_prefetch'; using zero" } */
+}
--
2.31.1
