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2003-02-25 Franz Sirl <Franz.Sirl-kernel@lauterbach.com>
PR target/9732
* config/rs6000/rs6000.c (first_reg_to_save): Handle
PIC_OFFSET_TABLE_REGNUM for -fPIC too.
(rs6000_emit_prologue): Likewise.
(rs6000_emit_epilogue): Likewise.
* config/rs6000/rs6000.h (CONDITIONAL_REGISTER_USAGE): Make
PIC_OFFSET_TABLE_REGNUM a fixed register for -fPIC.
* testsuite/gcc.dg/20030225-2.c: New test.
--- gcc-3.2.2/gcc/config/rs6000/rs6000.c.pr9732 2003-01-29 20:56:16.000000000 +0100
+++ gcc-3.2.2/gcc/config/rs6000/rs6000.c 2003-02-28 10:52:09.000000000 +0100
@@ -7412,7 +7412,7 @@ first_reg_to_save ()
if (regs_ever_live[first_reg]
&& (! call_used_regs[first_reg]
|| (first_reg == RS6000_PIC_OFFSET_TABLE_REGNUM
- && ((DEFAULT_ABI == ABI_V4 && flag_pic == 1)
+ && ((DEFAULT_ABI == ABI_V4 && flag_pic != 0)
|| (DEFAULT_ABI == ABI_DARWIN && flag_pic)))))
break;
@@ -8804,7 +8804,7 @@ rs6000_emit_prologue ()
if ((regs_ever_live[info->first_gp_reg_save+i]
&& ! call_used_regs[info->first_gp_reg_save+i])
|| (i+info->first_gp_reg_save == RS6000_PIC_OFFSET_TABLE_REGNUM
- && ((DEFAULT_ABI == ABI_V4 && flag_pic == 1)
+ && ((DEFAULT_ABI == ABI_V4 && flag_pic != 0)
|| (DEFAULT_ABI == ABI_DARWIN && flag_pic))))
{
rtx addr, reg, mem;
@@ -9190,7 +9190,7 @@ rs6000_emit_epilogue (sibcall)
if ((regs_ever_live[info->first_gp_reg_save+i]
&& ! call_used_regs[info->first_gp_reg_save+i])
|| (i+info->first_gp_reg_save == RS6000_PIC_OFFSET_TABLE_REGNUM
- && ((DEFAULT_ABI == ABI_V4 && flag_pic == 1)
+ && ((DEFAULT_ABI == ABI_V4 && flag_pic != 0)
|| (DEFAULT_ABI == ABI_DARWIN && flag_pic))))
{
rtx addr = gen_rtx_PLUS (Pmode, frame_reg_rtx,
--- gcc-3.2.2/gcc/config/rs6000/rs6000.h.pr9732 2002-08-08 19:52:40.000000000 +0200
+++ gcc-3.2.2/gcc/config/rs6000/rs6000.h 2003-02-28 10:52:10.000000000 +0100
@@ -962,6 +962,10 @@ extern int rs6000_altivec_abi;
= call_really_used_regs[i] = 1; \
if (DEFAULT_ABI == ABI_V4 \
&& PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM \
+ && flag_pic == 2) \
+ fixed_regs[RS6000_PIC_OFFSET_TABLE_REGNUM] = 1; \
+ if (DEFAULT_ABI == ABI_V4 \
+ && PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM \
&& flag_pic == 1) \
fixed_regs[RS6000_PIC_OFFSET_TABLE_REGNUM] \
= call_used_regs[RS6000_PIC_OFFSET_TABLE_REGNUM] \
--- gcc-3.2.2/gcc/testsuite/gcc.dg/20030225-2.c.pr9732 2003-02-28 10:55:14.000000000 +0100
+++ gcc-3.2.2/gcc/testsuite/gcc.dg/20030225-2.c 2003-02-28 10:55:03.000000000 +0100
@@ -0,0 +1,103 @@
+/* PR target/9732
+ This testcase segfaulted on PPC because PIC_OFFSET_TABLE_REGNUM was no
+ fixed register.
+ Distilled from the xvid sources by Guillaume Morin <guillaume@morinfr.org>
+ and Benjamin Herrenschmidt <benh@kernel.crashing.org>. */
+/* { dg-do run } */
+/* { dg-options "-O2 -fPIC" } */
+/* { dg-warning "not supported" "PIC unsupported" { target cris-*-elf* mmix-*-* } 0 } */
+
+
+extern void exit (int);
+
+#define W1 2841 /* 2048*sqrt(2)*cos(1*pi/16) */
+#define W2 2676 /* 2048*sqrt(2)*cos(2*pi/16) */
+#define W3 2408 /* 2048*sqrt(2)*cos(3*pi/16) */
+#define W5 1609 /* 2048*sqrt(2)*cos(5*pi/16) */
+#define W6 1108 /* 2048*sqrt(2)*cos(6*pi/16) */
+#define W7 565 /* 2048*sqrt(2)*cos(7*pi/16) */
+
+
+/* private data */
+static short iclip[1024]; /* clipping table */
+static short *iclp;
+
+void
+idct_int32(short *const block)
+{
+ static short *blk;
+ static long i;
+ static long X0, X1, X2, X3, X4, X5, X6, X7, X8;
+
+ for (i = 0; i < 8; i++) /* idct columns */
+ {
+ blk = block + i;
+ /* shortcut */
+ if (! ((X1 = (blk[8 * 4] << 8)) | (X2 = blk[8 * 6])
+ | (X3 = blk[8 * 2]) | (X4 = blk[8 * 1]) | (X5 = blk[8 * 7])
+ | (X6 = blk[8 * 5]) | (X7 = blk[8 * 3])))
+ {
+ blk[8 * 0] = blk[8 * 1] = blk[8 * 2] =
+ blk[8 * 3] = blk[8 * 4] =
+ blk[8 * 5] = blk[8 * 6] = blk[8 * 7] =
+ iclp[(blk[8 * 0] + 32) >> 6];
+ continue;
+ }
+ X0 = (blk[8 * 0] << 8) + 8192;
+
+ /* first stage */
+ X8 = W7 * (X4 + X5) + 4;
+ X4 = (X8 + (W1 - W7) * X4) >> 3;
+ X5 = (X8 - (W1 + W7) * X5) >> 3;
+ X8 = W3 * (X6 + X7) + 4;
+ X6 = (X8 - (W3 - W5) * X6) >> 3;
+ X7 = (X8 - (W3 + W5) * X7) >> 3;
+
+ /* second stage */
+ X8 = X0 + X1;
+ X0 -= X1;
+ X1 = W6 * (X3 + X2) + 4;
+ X2 = (X1 - (W2 + W6) * X2) >> 3;
+ X3 = (X1 + (W2 - W6) * X3) >> 3;
+ X1 = X4 + X6;
+ X4 -= X6;
+ X6 = X5 + X7;
+ X5 -= X7;
+
+ /* third stage */
+ X7 = X8 + X3;
+ X8 -= X3;
+ X3 = X0 + X2;
+ X0 -= X2;
+ X2 = (181 * (X4 + X5) + 128) >> 8;
+ X4 = (181 * (X4 - X5) + 128) >> 8;
+
+ /* fourth stage */
+ blk[8 * 0] = iclp[(X7 + X1) >> 14];
+ blk[8 * 1] = iclp[(X3 + X2) >> 14];
+ blk[8 * 2] = iclp[(X0 + X4) >> 14];
+ blk[8 * 3] = iclp[(X8 + X6) >> 14];
+ blk[8 * 4] = iclp[(X8 - X6) >> 14];
+ blk[8 * 5] = iclp[(X0 - X4) >> 14];
+ blk[8 * 6] = iclp[(X3 - X2) >> 14];
+ blk[8 * 7] = iclp[(X7 - X1) >> 14];
+ }
+} /* end function idct_int32(block) */
+
+
+int main(void) {
+ int i;
+ unsigned short tab[64];
+
+ for (i = 0 ; i < 64 ; ++i)
+ {
+ tab[i] = (1+(int) (65535)*8000/(2147483647+1.0));
+ }
+
+ iclp = iclip + 512;
+ for (i = -512; i < 512; i++)
+ iclp[i] = (i < -256) ? -256 : ((i > 255) ? 255 : i);
+
+ idct_int32((short *) tab);
+ exit (0);
+}
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