patches/gcc/3.3.1/pr11162-1-test.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun May 20 13:48:26 2007 +0000 (2007-05-20)
changeset 112 ea15433daba0
permissions -rw-r--r--
Ah! I finally have a progress bar that doesn't stall the build!
- pipe size in Linux is only 8*512=4096 bytes
- pipe size is not setable
- when the feeding process spits out data faster than the eating
process can read it, then the feeding process stalls after 4KiB
of data sent to the pipe
- for us, the progress bar would spawn a sub-shell every line,
and the sub-shell would in turn spawn a 'date' command.
Which was sloooww as hell, and would cause some kind of a
starvation: the pipe was full most of the time, and the
feeding process was stalled all this time.

Now, we use internal variables and a little hack based onan offset
to determine the elapsed time. Much faster this way, but still
CPU-intensive.
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--- /dev/null	Sat Dec 14 13:56:51 2002
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+++ gcc-3.3.1/gcc/testsuite/gcc.dg/pr11162-1.c	Sun Sep 14 16:24:41 2003
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@@ -0,0 +1,22 @@
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+/*
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+ * PR optimization/11162
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+ * Reporter: Toshiyasu Morita <tm@kloo.net>
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+ * Summary: [3.4 Regression] [-fnew-ra] ICE compiling channel.i on sh
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+ * Keywords: ice-on-valid-code
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+ * Description:
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+ * [ICE] when channel.i from stress-1.17 is compiled with options:
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+ * -O2 -m4 -fnew-ra
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+ * ...
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+ * The CFG code gets confused by the addition of a USE insn after a sibcall.
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+ * Sibcalls are supposed to end the block (and the function!), so the fact
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+ * that we have an instruction following one (even if its fake) is confusing.
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+ *
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+ * testcase tweaked by dank@kegel.com
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+ */
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+/* { dg-do compile } */
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+/* { dg-options "-O2 -fnew-ra" } */
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+
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+int foo(char *p1)
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+{
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+	return bar(p1);
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+}