37 lines
1.2 KiB
Diff
37 lines
1.2 KiB
Diff
2013-02-20 Jakub Jelinek <jakub@redhat.com>
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PR inline-asm/56405
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* expr.c (expand_expr_real_1) <case TARGET_MEM_REF, MEM_REF>: Don't
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use movmisalign or extract_bit_field for EXPAND_MEMORY modifier.
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* gcc.c-torture/compile/pr56405.c: New test.
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--- gcc/expr.c.jj 2013-01-18 18:09:40.000000000 +0100
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+++ gcc/expr.c 2013-02-20 10:29:34.513143634 +0100
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@@ -9551,6 +9551,7 @@ expand_expr_real_1 (tree exp, rtx target
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set_mem_addr_space (temp, as);
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align = get_object_alignment (exp);
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if (modifier != EXPAND_WRITE
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+ && modifier != EXPAND_MEMORY
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&& mode != BLKmode
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&& align < GET_MODE_ALIGNMENT (mode)
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/* If the target does not have special handling for unaligned
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@@ -9639,6 +9640,7 @@ expand_expr_real_1 (tree exp, rtx target
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if (TREE_THIS_VOLATILE (exp))
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MEM_VOLATILE_P (temp) = 1;
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if (modifier != EXPAND_WRITE
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+ && modifier != EXPAND_MEMORY
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&& mode != BLKmode
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&& align < GET_MODE_ALIGNMENT (mode))
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{
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--- gcc/testsuite/gcc.c-torture/compile/pr56405.c.jj 2013-02-20 10:32:17.807250979 +0100
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+++ gcc/testsuite/gcc.c-torture/compile/pr56405.c 2013-02-20 10:32:46.963090873 +0100
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@@ -0,0 +1,7 @@
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+/* PR inline-asm/56405 */
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+
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+void
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+foo (void)
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+{
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+ asm volatile ("" : "+m" (*(volatile unsigned short *) 0x1001UL));
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+}
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