* [PATCH, i386, PR target/66048] Fix mode switching ICE for functions returning bounds
@ 2015-05-12 10:12 Ilya Enkovich
2015-05-12 11:13 ` Uros Bizjak
2015-05-12 20:05 ` Jeff Law
0 siblings, 2 replies; 3+ messages in thread
From: Ilya Enkovich @ 2015-05-12 10:12 UTC (permalink / raw)
To: gcc-patches; +Cc: ubizjak
Hi,
This patch moves up use insns for returned bounds and also marks bnd1 register as holding return value. This fixes problem in create_pre_exit for functions with no returned bounds initialization. Bootstrapped and regtested for x86_64-unknown-linux-gnu. Is it OK for trunk/gcc-5?
Thanks,
Ilya
--
gcc/
2015-05-12 Ilya Enkovich <ilya.enkovich@intel.com>
* function.c (diddle_return_value_1): Process bounds first.
* config/i38/i386.c (ix86_function_value_regno_p): Add bnd1
register.
gcc/testsuite/
2015-05-12 Ilya Enkovich <ilya.enkovich@intel.com>
* gcc.target/i386/mpx/pr66048.cc: New.
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 7bd9ff3..869e064 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -8187,7 +8187,8 @@ ix86_function_value_regno_p (const unsigned int regno)
case SI_REG:
return TARGET_64BIT && ix86_abi != MS_ABI;
- case FIRST_BND_REG:
+ case BND0_REG:
+ case BND1_REG:
return chkp_function_instrumented_p (current_function_decl);
/* Complex values are returned in %st(0)/%st(1) pair. */
diff --git a/gcc/function.c b/gcc/function.c
index 4f4c461..c81ee4c 100644
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -5224,8 +5224,8 @@ diddle_return_value_1 (void (*doit) (rtx, void *), void *arg, rtx outgoing)
void
diddle_return_value (void (*doit) (rtx, void *), void *arg)
{
- diddle_return_value_1 (doit, arg, crtl->return_rtx);
diddle_return_value_1 (doit, arg, crtl->return_bnd);
+ diddle_return_value_1 (doit, arg, crtl->return_rtx);
}
static void
diff --git a/gcc/testsuite/gcc.target/i386/mpx/pr66048.cc b/gcc/testsuite/gcc.target/i386/mpx/pr66048.cc
new file mode 100644
index 0000000..b29cd03
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/mpx/pr66048.cc
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fcheck-pointer-bounds -mmpx -march=corei7-avx" } */
+
+struct c1
+{
+ c1 (const c1 &other) : p (other.p) { };
+ int *p;
+};
+
+struct c2 : public c1 { };
+
+c1
+test (c2 a)
+{
+ return a;
+}
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH, i386, PR target/66048] Fix mode switching ICE for functions returning bounds
2015-05-12 10:12 [PATCH, i386, PR target/66048] Fix mode switching ICE for functions returning bounds Ilya Enkovich
@ 2015-05-12 11:13 ` Uros Bizjak
2015-05-12 20:05 ` Jeff Law
1 sibling, 0 replies; 3+ messages in thread
From: Uros Bizjak @ 2015-05-12 11:13 UTC (permalink / raw)
To: Ilya Enkovich; +Cc: gcc-patches
On Tue, May 12, 2015 at 12:07 PM, Ilya Enkovich <enkovich.gnu@gmail.com> wrote:
> This patch moves up use insns for returned bounds and also marks bnd1 register as holding return value. This fixes problem in create_pre_exit for functions with no returned bounds initialization. Bootstrapped and regtested for x86_64-unknown-linux-gnu. Is it OK for trunk/gcc-5?
>
> 2015-05-12 Ilya Enkovich <ilya.enkovich@intel.com>
>
> * function.c (diddle_return_value_1): Process bounds first.
> * config/i38/i386.c (ix86_function_value_regno_p): Add bnd1
> register.
>
> gcc/testsuite/
>
> 2015-05-12 Ilya Enkovich <ilya.enkovich@intel.com>
>
> * gcc.target/i386/mpx/pr66048.cc: New.
x86 part is OK.
Thanks,
Uros.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH, i386, PR target/66048] Fix mode switching ICE for functions returning bounds
2015-05-12 10:12 [PATCH, i386, PR target/66048] Fix mode switching ICE for functions returning bounds Ilya Enkovich
2015-05-12 11:13 ` Uros Bizjak
@ 2015-05-12 20:05 ` Jeff Law
1 sibling, 0 replies; 3+ messages in thread
From: Jeff Law @ 2015-05-12 20:05 UTC (permalink / raw)
To: Ilya Enkovich, gcc-patches; +Cc: ubizjak
On 05/12/2015 04:07 AM, Ilya Enkovich wrote:
> Hi,
>
> This patch moves up use insns for returned bounds and also marks bnd1 register as holding return value. This fixes problem in create_pre_exit for functions with no returned bounds initialization. Bootstrapped and regtested for x86_64-unknown-linux-gnu. Is it OK for trunk/gcc-5?
>
> Thanks,
> Ilya
> --
> gcc/
>
> 2015-05-12 Ilya Enkovich <ilya.enkovich@intel.com>
>
> * function.c (diddle_return_value_1): Process bounds first.
> * config/i38/i386.c (ix86_function_value_regno_p): Add bnd1
> register.
>
> gcc/testsuite/
>
> 2015-05-12 Ilya Enkovich <ilya.enkovich@intel.com>
>
> * gcc.target/i386/mpx/pr66048.cc: New.
OK for the trunk. Release managers have the final say on the branches,
but looks pretty safe to me.
jeff
^ permalink raw reply [flat|nested] 3+ messages in thread
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2015-05-12 10:12 [PATCH, i386, PR target/66048] Fix mode switching ICE for functions returning bounds Ilya Enkovich
2015-05-12 11:13 ` Uros Bizjak
2015-05-12 20:05 ` Jeff Law
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