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aarch64: Fix another bug in aarch64_add_offset_1 [PR94121] 

> I'm getting this ICE with -mabi=ilp32:
>
> during RTL pass: fwprop1
> /opt/gcc/gcc-20200312/gcc/testsuite/gcc.dg/pr94121.c: In function 'bar':
> /opt/gcc/gcc-20200312/gcc/testsuite/gcc.dg/pr94121.c:16:1: internal compiler error: in decompose, at rtl.h:2279

That is a preexisting issue, caused by another bug in the same function.
When mode is SImode and moffset is 0x80000000 (or anything else with the
bit 31 set), we need to sign-extend it.

2020-03-13  Jakub Jelinek  <jakub@redhat.com>

	PR target/94121
	* config/aarch64/aarch64.c (aarch64_add_offset_1): Use gen_int_mode
	instead of GEN_INT.
This commit is contained in:
Jakub Jelinek 2020-03-13 11:33:16 +01:00
parent 3739894d0c
commit c2f836c413
2 changed files with 8 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,6 +1,12 @@
2020-03-17 Jakub Jelinek <jakub@redhat.com>
Backported from mainline
2020-03-13 Jakub Jelinek <jakub@redhat.com>
PR target/94121
* config/aarch64/aarch64.c (aarch64_add_offset_1): Use gen_int_mode
instead of GEN_INT.
2020-03-12 Jakub Jelinek <jakub@redhat.com>
* doc/tm.texi.in (ASM_OUTPUT_ALIGNED_DECL_LOCAL): Change

3
gcc/config/aarch64/aarch64.c
View File

@ -2862,7 +2862,8 @@ aarch64_add_offset_1 (scalar_int_mode mode, rtx dest,
if (emit_move_imm)
{
gcc_assert (temp1 != NULL_RTX || can_create_pseudo_p ());
temp1 = aarch64_force_temporary (mode, temp1, GEN_INT (moffset));
temp1 = aarch64_force_temporary (mode, temp1,
gen_int_mode (moffset, mode));
}
insn = emit_insn (offset < 0
? gen_sub3_insn (dest, src, temp1)