Linaro GCC

  1. Bug #1234060
  2. Comment #5

Comment 5 for bug 1234060

Revision history for this message
Kugan Vivekanandarajah (kugan-vivekanandarajah) wrote : Re: Wrong code generation for -march=armv7-a -thumb (Found during GMP bulild)

Generated code is wrong due to the output template of the patterns (please see below). Commit 201250 Fixes it.

243.dfinish
=============
(insn 62 61 63 2 (set (reg:SI 3 r3 [orig:156 _qh ] [156])
        (plus:SI (plus:SI (geu:SI (reg:CC 100 cc)
                    (const_int 0 [0]))
                (reg:SI 3 r3 [orig:151 D.4776 ] [151]))
            (reg/v:SI 1 r1 [orig:110 __x3 ] [110]))) test.c:44 18 {*addsi3_carryin_alt2_geu}
     (expr_list:REG_DEAD (reg:CC 100 cc)
        (expr_list:REG_DEAD (reg/v:SI 1 r1 [orig:110 __x3 ] [110])
            (nil))))

Generated Wrong Code
===============
adc r3, r3 @ 62 *addsi3_carryin_alt2_geu/1 [length = 4]