[Buildroot] [PATCH] gcc: fix incorrect handling of the comparison arguments
Lada Trimasova
Lada.Trimasova at synopsys.com
Thu Nov 26 17:21:38 UTC 2015
This patch fixes compiler error during libbroadvoice build.
The comparison arguments where not correctly handled.
The fix is done in development tree:
https://github.com/foss-for-synopsys-dwc-arc-processors/gcc/commit/b4035128ba8f8bbbf9527f54f261a87b304ca4c5
and will be a part of the next release of ARC GNU tools.
Once that new release happens this patch must be removed.
Fixes:
http://autobuild.buildroot.net/results/bea/beace68a19382b43370c798dcf7d2ef412f9d75e/
Signed-off-by: Lada Trimasova <ltrimas at synopsys.com>
Cc: Alexey Brodkin <abrodkin at synopsys.com>
Cc: Anton Kolesov <akolesov at synopsys.com>
Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Cc: Peter Korsgaard <peter at korsgaard.com>
---
.../0001-Handle-correctly-compare-arguments.patch | 71 ++++++++++++++++++++++
1 file changed, 71 insertions(+)
create mode 100644 package/gcc/arc-2015.06/0001-Handle-correctly-compare-arguments.patch
diff --git a/package/gcc/arc-2015.06/0001-Handle-correctly-compare-arguments.patch b/package/gcc/arc-2015.06/0001-Handle-correctly-compare-arguments.patch
new file mode 100644
index 0000000..b9a60d9
--- /dev/null
+++ b/package/gcc/arc-2015.06/0001-Handle-correctly-compare-arguments.patch
@@ -0,0 +1,71 @@
+From b4035128ba8f8bbbf9527f54f261a87b304ca4c5 Mon Sep 17 00:00:00 2001
+From: Claudiu Zissulescu <claziss at synopsys.com>
+Date: Mon, 9 Nov 2015 15:23:39 +0100
+Subject: [PATCH] Handle correctly compare arguments
+
+---
+ gcc/config/arc/arc.c | 24 ++++++++++++++++++------
+ 1 files changed, 18 insertions(+), 6 deletions(-)
+
+diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
+index bd53525..caf483b 100644
+--- a/gcc/config/arc/arc.c
++++ b/gcc/config/arc/arc.c
+@@ -1998,7 +1998,7 @@ gen_compare_reg (rtx comparison, enum machine_mode omode)
+ rtx y = XEXP (comparison, 1);
+ rtx tmp, cc_reg;
+ enum machine_mode mode, cmode;
+-
++ bool swap = false;
+
+ cmode = GET_MODE (x);
+ if (cmode == VOIDmode)
+@@ -2073,6 +2073,7 @@ gen_compare_reg (rtx comparison, enum machine_mode omode)
+ rtx op0 = gen_rtx_REG (cmode, 0);
+ rtx op1 = gen_rtx_REG (cmode, GET_MODE_SIZE (cmode) / UNITS_PER_WORD);
+
++ swap = false;
+ switch (code)
+ {
+ case NE: case EQ: case GT: case UNLE: case GE: case UNLT:
+@@ -2080,22 +2081,33 @@ gen_compare_reg (rtx comparison, enum machine_mode omode)
+ break;
+ case LT: case UNGE: case LE: case UNGT:
+ code = swap_condition (code);
+- tmp = x;
+- x = y;
+- y = tmp;
++ swap = true;
+ break;
+ default:
+ gcc_unreachable ();
+ }
+ if (currently_expanding_to_rtl)
+ {
+- emit_move_insn (op0, x);
+- emit_move_insn (op1, y);
++ if (swap)
++ {
++ emit_move_insn (op0, y);
++ emit_move_insn (op1, x);
++ }
++ else
++ {
++ emit_move_insn (op0, x);
++ emit_move_insn (op1, y);
++ }
+ }
+ else
+ {
+ gcc_assert (rtx_equal_p (op0, x));
+ gcc_assert (rtx_equal_p (op1, y));
++ if (swap)
++ {
++ op0 = y;
++ op1 = x;
++ }
+ }
+ emit_insn (gen_cmp_float (cc_reg, gen_rtx_COMPARE (mode, op0, op1)));
+ }
+--
+2.5.0
--
2.5.0
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