https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114487
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[14 regression] ICE when |ICE when building libsdl2
|building libsdl2 on |on -mfpmath=sse x86 with
|-mfpmath=sse x86 with LTO |LTO
Known to fail| |12.3.1, 13.2.1, 14.0, 7.5.0
Status|UNCONFIRMED |NEW
Last reconfirmed| |2024-03-27
Keywords| |lto
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I can confirm the ICE. We're expanding
;; gamma_4 = SDLTest_RandomUnitFloat ();
(call_insn/u 5 4 6 (set (reg:SF 20 xmm0)
(call (mem:QI (symbol_ref:SI ("SDLTest_RandomUnitFloat") [flags 0x3]
<function_decl 0x7f8b97072200 SDLTest_RandomUnitFloat>) [0
SDLTest_RandomUnitFloat S1 A8])
(const_int 0 [0]))) "testautomation-testautomation_pixels.i":15:17
-1
(expr_list:REG_CALL_DECL (symbol_ref:SI ("SDLTest_RandomUnitFloat") [flags
0x3] <function_decl 0x7f8b97072200 SDLTest_RandomUnitFloat>)
(expr_list:REG_EH_REGION (const_int 0 [0])
(nil)))
(nil))
(insn 6 5 0 (set (reg/v:SF 99 [ gamma ])
(reg:SF 20 xmm0)) "testautomation-testautomation_pixels.i":15:17 -1
(nil))
I'm not sure what's wrong - looks like a target issue to me.
I'll note -mmmx -msse isn't necessary, -msse2 is enough. Likewise -fPIC
isn't required. I've reproduced with -m32 added on x86_64.
GCC 13/12 are also broken the same way and GCC 7 doesn't terminate compiling.
So I'm not sure whether this is a regression (the reduced testcase, that is).
I can't find a version that works.
