63 lines
2.1 KiB
Diff
63 lines
2.1 KiB
Diff
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From 59e07c6c77dcc92d274ca6156b8916f66035dce8 Mon Sep 17 00:00:00 2001
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From: Haochen Jiang <haochen.jiang@intel.com>
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Date: Mon, 22 Jul 2024 14:06:18 +0800
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Subject: [PATCH 1/2] i386: Change prefetchi output template
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For prefetchi instructions, RIP-relative address is explicitly mentioned
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for operand and assembler obeys that rule strictly. This makes
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instruction like:
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prefetchit0 bar
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got illegal for assembler, which should be a broad usage for prefetchi.
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Change to %a to explicitly add (%rip) after function label to make it
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legal in assembler so that it could pass to linker to get the real address.
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gcc/ChangeLog:
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* config/i386/i386.md (prefetchi): Change to %a.
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gcc/testsuite/ChangeLog:
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* gcc.target/i386/prefetchi-1.c: Check (%rip).
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Reference:
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https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=
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062e46a813799684c6f900815fd22451d6294ae1
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---
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gcc/config/i386/i386.md | 2 +-
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gcc/testsuite/gcc.target/i386/prefetchi-1.c | 4 ++--
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2 files changed, 3 insertions(+), 3 deletions(-)
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diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
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index f08c2cfb1..1b733008e 100644
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--- a/gcc/config/i386/i386.md
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+++ b/gcc/config/i386/i386.md
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@@ -22917,7 +22917,7 @@
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"TARGET_PREFETCHI && TARGET_64BIT"
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{
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static const char * const patterns[2] = {
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- "prefetchit1\t%0", "prefetchit0\t%0"
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+ "prefetchit1\t%a0", "prefetchit0\t%a0"
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};
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int locality = INTVAL (operands[1]);
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diff --git a/gcc/testsuite/gcc.target/i386/prefetchi-1.c b/gcc/testsuite/gcc.target/i386/prefetchi-1.c
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index 80f25e70e..03dfdc55e 100644
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--- a/gcc/testsuite/gcc.target/i386/prefetchi-1.c
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+++ b/gcc/testsuite/gcc.target/i386/prefetchi-1.c
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@@ -1,7 +1,7 @@
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/* { dg-do compile { target { ! ia32 } } } */
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/* { dg-options "-mprefetchi -O2" } */
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-/* { dg-final { scan-assembler-times "\[ \\t\]+prefetchit0\[ \\t\]+" 2 } } */
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-/* { dg-final { scan-assembler-times "\[ \\t\]+prefetchit1\[ \\t\]+" 2 } } */
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+/* { dg-final { scan-assembler-times "\[ \\t\]+prefetchit0\[ \\t\]+bar\\(%rip\\)" 2 } } */
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+/* { dg-final { scan-assembler-times "\[ \\t\]+prefetchit1\[ \\t\]+bar\\(%rip\\)" 2 } } */
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#include <x86intrin.h>
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--
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2.31.1
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