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gc: describe debugging flags

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The change to -m is the only one necessary
to close the issue.  The others are useful
to know about when debugging but shouldn't
be in the usage message since they may go
away or change at any time.

Fixes #2802.

R=lvd, rsc
CC=golang-dev
https://golang.org/cl/5606046
This commit is contained in:
Anthony Martin 2012-02-02 14:02:54 -08:00
parent 7dca24ee7e
commit 4b6cd239c5
1 changed files with 19 additions and 4 deletions
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23
src/cmd/gc/lex.c
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@ -132,10 +132,25 @@ usage(void)
{ {
print("gc: usage: %cg [flags] file.go...\n", thechar); print("gc: usage: %cg [flags] file.go...\n", thechar);
print("flags:\n"); print("flags:\n");
// -A is allow use of "any" type, for bootstrapping // -A allow use of "any" type, for bootstrapping
// -B disable bounds checking
// -E print imported declarations
// -K warn when lineno is zero
// -M print arguments to gmove
// -P print peephole diagnostics
// -R print optimizer diagnostics
// -g print code generation diagnostics
// -i print line history
// -j print variables to be initialized at runtime
// -r print generated helper functions
// -s print redundant types in composite literals
// -v print more information with -P or -R
// -y print declarations in cannedimports (used with -d)
// -% print non-static initializers
// -+ indicate that the runtime is being compiled
print(" -I DIR search for packages in DIR\n"); print(" -I DIR search for packages in DIR\n");
print(" -L show full path in file:line prints\n"); print(" -L show full path in file:line prints\n");
print(" -N disable optimizer\n"); print(" -N disable optimizations\n");
print(" -S print the assembly language\n"); print(" -S print the assembly language\n");
print(" -V print the compiler version\n"); print(" -V print the compiler version\n");
print(" -W print the parse tree after typing\n"); print(" -W print the parse tree after typing\n");
@ -143,10 +158,10 @@ usage(void)
print(" -e no limit on number of errors printed\n"); print(" -e no limit on number of errors printed\n");
print(" -f print stack frame structure\n"); print(" -f print stack frame structure\n");
print(" -h panic on an error\n"); print(" -h panic on an error\n");
print(" -m print about moves to heap\n"); print(" -l disable inlining\n");
print(" -m print optimization decisions\n");
print(" -o file specify output file\n"); print(" -o file specify output file\n");
print(" -p assumed import path for this code\n"); print(" -p assumed import path for this code\n");
print(" -s disable escape analysis\n");
print(" -u disable package unsafe\n"); print(" -u disable package unsafe\n");
print(" -w print type checking details\n"); print(" -w print type checking details\n");
print(" -x print lex tokens\n"); print(" -x print lex tokens\n");