|Subject:||Re: [Tinycc-devel] Floating/Double issue on arm64 in mob|
|Date:||Fri, 8 Nov 2019 05:15:18 -0500|
I added a test case in 22_floating_point.c and pushed the suggested fix in mod.
I confirm this BUG which appends on my FC31 Rpi aarch64.
I “think” 4104 can be interpreted as VT_EXTERN | VT_FLOAT (i.e 0x00001000 | 0x8)
Quickly trying following diff looks to fix this issue (and makes the whole test suite still happy). I let maintainers tell me if it is the right fix to apply.
diff --git a/arm64-gen.c b/arm64-gen.c
index 5606271..5cd9e6b 100644
@@ -1775,7 +1775,8 @@ ST_FUNC void gen_cvt_ftoi(int t)
ST_FUNC void gen_cvt_ftof(int t)
- int f = vtop.type.t;
+ int f = vtop.type.t & VT_BTYPE;
assert(t == VT_FLOAT || t == VT_DOUBLE || t == VT_LDOUBLE);
assert(f == VT_FLOAT || f == VT_DOUBLE || f == VT_LDOUBLE);
if (t == f)
From: Tinycc-devel [mailto:tinycc-devel-bounces+eligis=address@hidden] On Behalf Of Charles Lohr
Sent: Tuesday, November 05, 2019 07:52
Subject: [Tinycc-devel] Floating/Double issue on arm64 in mob
Using default settings, in hash 96f1fb1, current mob head, I am having an internal compiler assert on arm64. The following program causes an assert. There are other cases but the assert remains the same.
if( fd < 5.5 ) return 1;
root@omitted:~/apps/cnovr/lib/tinycc# ./tcc failtest.c -Iinclude
tcc: arm64-gen.c:1781: gen_cvt_ftof: Assertion `f == VT_FLOAT || f == VT_DOUBLE || f == VT_LDOUBLE' failed.
Digging a little further, turns out f is of type 4104. I'm not sure what the best path forward here is. Any clues?
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