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ifcvt.c (cond_exec_process_insns): Disallow converting a block that contains the prologue.

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* ifcvt.c (cond_exec_process_insns): Disallow converting a block
	that contains the prologue.

	* gcc.c-torture/compile/20110401-1.c: New test.

From-SVN: r171840
This commit is contained in:
Bernd Schmidt 2011-04-01 17:40:27 +00:00 • committed by Bernd Schmidt
parent 722279e41f
commit c5dd277d01
4 changed files with 35 additions and 1 deletions
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3
gcc/ChangeLog
View file

@ -7,6 +7,9 @@
* final.c (final_start_function): Call the new function rather
than using a NULL argument for dwarf2out_frame_debug.
* ifcvt.c (cond_exec_process_insns): Disallow converting a block
that contains the prologue.
2011-04-01 Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
* config/spu/t-spu-elf (dp-bit.c): Use > instead of >>.

7
gcc/ifcvt.c
View file

@ -1,5 +1,6 @@
/* If-conversion support.
Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010
Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010,
2011
Free Software Foundation, Inc.
This file is part of GCC.
@ -304,6 +305,10 @@ cond_exec_process_insns (ce_if_block_t *ce_info ATTRIBUTE_UNUSED,
for (insn = start; ; insn = NEXT_INSN (insn))
{
/* dwarf2out can't cope with conditional prologues. */
if (NOTE_P (insn) && NOTE_KIND (insn) == NOTE_INSN_PROLOGUE_END)
return FALSE;
if (NOTE_P (insn) || DEBUG_INSN_P (insn))
goto insn_done;

4
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,7 @@
2011-04-01 Bernd Schmidt <bernds@codesourcery.com>
* gcc.c-torture/compile/20110401-1.c: New test.
2011-03-31 Ian Lance Taylor <iant@google.com>
* go.test/go-test.exp (go-set-goarch): Recognize MIPS ABIs.

22
gcc/testsuite/gcc.c-torture/compile/20110401-1.c Normal file
View file

@ -0,0 +1,22 @@
void asn1_length_der (unsigned long int len, unsigned char *ans, int *ans_len)
{
int k;
unsigned char temp[4];
if (len < 128) {
if (ans != ((void *) 0))
ans[0] = (unsigned char) len;
*ans_len = 1;
} else {
k = 0;
while (len) {
temp[k++] = len & 0xFF;
len = len >> 8;
}
*ans_len = k + 1;
if (ans != ((void *) 0)) {
ans[0] = ((unsigned char) k & 0x7F) + 128;
while (k--)
ans[*ans_len - 1 - k] = temp[k];
}
}
}