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| author | Tom Rix <trix@redhat.com> | 2002-01-02 03:48:53 +0000 |
|---|---|---|
| committer | Tom Rix <trix@gcc.gnu.org> | 2002-01-02 03:48:53 +0000 |
| commit | 252b88f78c6dd7615992ef7e89be748251b7257d (patch) | |
| tree | 20a15e63d1644beb9bbddbd4e0a7125db9510a06 | |
| parent | 99e9e773cba195bd70a4c757d46afe9b55f6c399 (diff) | |
| download | gcc-252b88f78c6dd7615992ef7e89be748251b7257d.zip gcc-252b88f78c6dd7615992ef7e89be748251b7257d.tar.gz gcc-252b88f78c6dd7615992ef7e89be748251b7257d.tar.bz2 | |
Fix for rs6000_emit_allocate_stack's use of rs6000_emit_set_long_const for ppc64.
From-SVN: r48458
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 39 |
2 files changed, 39 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a9eaf973..c4f7c95 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -19,6 +19,11 @@ * tree.h: Document new use of TREE_ADDRESSABLE. (expand_expr_stmt_value): Declare. +2002-01-01 Tom Rix <trix@redhat.com> + + * config/rs6000/rs6000.c (rs6000_emit_set_long_const): Fix for use by + rs6000_emit_allocate_stack. + 2002-01-01 Joseph S. Myers <jsm28@cam.ac.uk> * configure.in: Prepend ${srcdir}/config/${cpu_type}/ instead of diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 2b3587c..c244552 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -2002,7 +2002,12 @@ rs6000_emit_set_long_const (dest, c1, c2) } else { - HOST_WIDE_INT d1, d2, d3, d4; + HOST_WIDE_INT d1, d2, d2_s, d3, d4; + + /* This function is called by rs6000_emit_allocate_stack after reload + with a dest of r0. r0 is an invalid register for addsi. Use an addi + and a shift instead. */ + int regnum = REGNO (dest); /* Decompose the entire word */ #if HOST_BITS_PER_WIDE_INT >= 64 @@ -2011,6 +2016,7 @@ rs6000_emit_set_long_const (dest, c1, c2) d1 = ((c1 & 0xffff) ^ 0x8000) - 0x8000; c1 -= d1; d2 = ((c1 & 0xffffffff) ^ 0x80000000) - 0x80000000; + d2_s = d2 >> 16; c1 = (c1 - d2) >> 32; d3 = ((c1 & 0xffff) ^ 0x8000) - 0x8000; c1 -= d3; @@ -2021,6 +2027,7 @@ rs6000_emit_set_long_const (dest, c1, c2) d1 = ((c1 & 0xffff) ^ 0x8000) - 0x8000; c1 -= d1; d2 = ((c1 & 0xffffffff) ^ 0x80000000) - 0x80000000; + d2_s = d2 >> 16; if (c1 != d2) abort (); c2 += (d2 < 0); @@ -2039,18 +2046,40 @@ rs6000_emit_set_long_const (dest, c1, c2) emit_move_insn (dest, gen_rtx_PLUS (DImode, dest, GEN_INT (d3))); } - else + else if (d3 != 0) emit_move_insn (dest, GEN_INT (d3)); /* Shift it into place */ if (d3 != 0 || d4 != 0) - emit_move_insn (dest, gen_rtx_ASHIFT (DImode, dest, GEN_INT (32))); + if (regnum == 0 && d2 != 0) + emit_move_insn (dest, gen_rtx_ASHIFT (DImode, dest, GEN_INT (16))); + else + emit_move_insn (dest, gen_rtx_ASHIFT (DImode, dest, GEN_INT (32))); /* Add in the low bits. */ if (d2 != 0) - emit_move_insn (dest, gen_rtx_PLUS (DImode, dest, GEN_INT (d2))); + { + if (d3 != 0 || d4 != 0) + { + if (regnum == 0) + { + emit_move_insn (dest, gen_rtx_PLUS (DImode, dest, + GEN_INT (d2_s))); + emit_move_insn (dest, gen_rtx_ASHIFT (DImode, dest, + GEN_INT (16))); + } + else + emit_move_insn (dest, gen_rtx_PLUS (DImode, dest, + GEN_INT (d2))); + } + else + emit_move_insn (dest, GEN_INT (d2)); + } if (d1 != 0) - emit_move_insn (dest, gen_rtx_PLUS (DImode, dest, GEN_INT (d1))); + if (d2 != 0 || d3 != 0 || d4 != 0) + emit_move_insn (dest, gen_rtx_PLUS (DImode, dest, GEN_INT (d1))); + else + emit_move_insn (dest, GEN_INT (d1)); } return dest; |