diff options
| author | Russ Cox <rsc@golang.org> | 2011-02-23 13:21:39 -0500 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2011-02-23 13:21:39 -0500 |
| commit | 63c24081a09a363735797097bf238a7c78d15fd7 (patch) | |
| tree | 9cd341b6be9305132c58d7b337ea5cf2a545738d | |
| parent | 9fc0f159c31e7b63708ed80982a88753db8a4a02 (diff) | |
| download | go-63c24081a09a363735797097bf238a7c78d15fd7.tar.gz go-63c24081a09a363735797097bf238a7c78d15fd7.zip | |
5g: fix optimizer bug
same as in issue below, never fixed on ARM
changeset: 5498:3fa1372ca694
user: Ken Thompson <ken@golang.org>
date: Thu May 20 17:31:28 2010 -0700
description:
fix issue 798
cannot allocate an audomatic temp
while real registers are allocated.
there is a chance that the automatic
will be allocated to one of the
allocated registers. the fix is to
not registerize such variables.
R=rsc
CC=golang-dev
https://golang.org/cl/1202042
R=ken2
CC=golang-dev
https://golang.org/cl/4226042
| -rw-r--r-- | src/cmd/5g/gg.h | 1 | ||||
| -rw-r--r-- | src/cmd/5g/gsubr.c | 1 | ||||
| -rw-r--r-- | src/cmd/5g/reg.c | 4 |
3 files changed, 4 insertions, 2 deletions
diff --git a/src/cmd/5g/gg.h b/src/cmd/5g/gg.h index 603c09fc8a..ce4575be95 100644 --- a/src/cmd/5g/gg.h +++ b/src/cmd/5g/gg.h @@ -27,6 +27,7 @@ struct Addr uchar type; char name; char reg; + char pun; uchar etype; }; #define A ((Addr*)0) diff --git a/src/cmd/5g/gsubr.c b/src/cmd/5g/gsubr.c index 133a21b3e8..83a9949d6c 100644 --- a/src/cmd/5g/gsubr.c +++ b/src/cmd/5g/gsubr.c @@ -1168,6 +1168,7 @@ naddr(Node *n, Addr *a, int canemitcode) a->etype = simtype[n->type->etype]; a->width = n->type->width; } + a->pun = n->pun; a->offset = n->xoffset; a->sym = n->sym; if(a->sym == S) diff --git a/src/cmd/5g/reg.c b/src/cmd/5g/reg.c index f31f70535e..1cbeb3e3de 100644 --- a/src/cmd/5g/reg.c +++ b/src/cmd/5g/reg.c @@ -697,8 +697,8 @@ mkvar(Reg *r, Adr *a) n = D_NONE; flag = 0; -// if(a->pun) -// flag = 1; + if(a->pun) + flag = 1; switch(t) { default: |