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* [gcc r12-2659] Fix PR 101683: FP exceptions for float->unsigned
@ 2021-08-02 14:47 Andrew Pinski
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From: Andrew Pinski @ 2021-08-02 14:47 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:99b520f031c0e491d7e170916df11dd645d60617

commit r12-2659-g99b520f031c0e491d7e170916df11dd645d60617
Author: Andrew Pinski <apinski@marvell.com>
Date:   Thu Jul 29 19:48:46 2021 -0700

    Fix PR 101683: FP exceptions for float->unsigned
    
    Just like the old bug PR9651, unsigned_fix rtl should
    also be handled as a trapping instruction.
    
    OK? Bootstrapped and tested on x86_64-linux-gnu with no regressions.
    
    gcc/ChangeLog:
    
            PR rtl-optimization/101683
            * rtlanal.c (may_trap_p_1): Handle UNSIGNED_FIX.

Diff:
---
 gcc/rtlanal.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c
index 3b8d88afd4d..f7f3acb75db 100644
--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -3261,6 +3261,7 @@ may_trap_p_1 (const_rtx x, unsigned flags)
       break;
 
     case FIX:
+    case UNSIGNED_FIX:
       /* Conversion of floating point might trap.  */
       if (flag_trapping_math && HONOR_NANS (XEXP (x, 0)))
 	return 1;


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