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* config/spu/spu.c (spu_expand_insv): Avoid undefined behavior. 

From-SVN: r227974
This commit is contained in:
Ulrich Weigand 2015-09-21 14:41:10 +00:00 committed by Ulrich Weigand
parent b1e251ec9e
commit a49448515d
2 changed files with 9 additions and 5 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2015-09-21 Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
* config/spu/spu.c (spu_expand_insv): Avoid undefined behavior.
2015-09-21 Richard Biener <rguenther@suse.de>
* passes.c (rest_of_decl_compilation): Do not call

10
gcc/config/spu/spu.c
View File

@ -472,7 +472,7 @@ spu_expand_insv (rtx ops[])
{
HOST_WIDE_INT width = INTVAL (ops[1]);
HOST_WIDE_INT start = INTVAL (ops[2]);
HOST_WIDE_INT maskbits;
unsigned HOST_WIDE_INT maskbits;
machine_mode dst_mode;
rtx dst = ops[0], src = ops[3];
int dst_size;
@ -527,15 +527,15 @@ spu_expand_insv (rtx ops[])
switch (dst_size)
{
case 32:
maskbits = (-1ll << (32 - width - start));
maskbits = (~(unsigned HOST_WIDE_INT)0 << (32 - width - start));
if (start)
maskbits += (1ll << (32 - start));
maskbits += ((unsigned HOST_WIDE_INT)1 << (32 - start));
emit_move_insn (mask, GEN_INT (maskbits));
break;
case 64:
maskbits = (-1ll << (64 - width - start));
maskbits = (~(unsigned HOST_WIDE_INT)0 << (64 - width - start));
if (start)
maskbits += (1ll << (64 - start));
maskbits += ((unsigned HOST_WIDE_INT)1 << (64 - start));
emit_move_insn (mask, GEN_INT (maskbits));
break;
case 128: