4fecb16cef
Memory references to DI mode objects could incorrectly be created at
offsets that are not supported by instructions l32i/s32i, resulting in
ICE at a stage when access to the object is split into access to its
subwords:
drivers/staging/rtl8188eu/core/rtw_ap.c:445:1:
internal compiler error: in change_address_1, at emit-rtl.c:2126
Fixes: https://lkml.org/lkml/2017/9/10/151
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
32 lines
957 B
Diff
32 lines
957 B
Diff
From 8dd3af97bb6ccb3dfd6cbe20c5a28ce80fcd0de7 Mon Sep 17 00:00:00 2001
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From: jcmvbkbc <jcmvbkbc@138bc75d-0d04-0410-961f-82ee72b054a4>
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Date: Mon, 11 Sep 2017 21:53:38 +0000
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Subject: [PATCH] xtensa: fix PR target/82181
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2017-09-11 Max Filippov <jcmvbkbc@gmail.com>
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gcc/
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Backport from mainline
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* config/xtensa/xtensa.c (xtensa_mem_offset): Check that both
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words of DImode object are reachable by xtensa_uimm8x4 access.
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Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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---
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gcc/config/xtensa/xtensa.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/gcc/config/xtensa/xtensa.c b/gcc/config/xtensa/xtensa.c
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index 3c0096113775..3eb4db85b971 100644
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--- a/gcc/config/xtensa/xtensa.c
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+++ b/gcc/config/xtensa/xtensa.c
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@@ -612,6 +612,7 @@ xtensa_mem_offset (unsigned v, enum machine_mode mode)
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case HImode:
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return xtensa_uimm8x2 (v);
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+ case DImode:
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case DFmode:
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return (xtensa_uimm8x4 (v) && xtensa_uimm8x4 (v + 4));
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--
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2.1.4
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