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lb1sf68.S (Laddsf$nf): Fix sign bit handling in path to Lf$finfty.

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2018-05-23  Kalamatee  <kalamatee@gmail.com>

	* config/m68k/lb1sf68.S (Laddsf$nf): Fix sign bit handling in
	path to Lf$finfty.

From-SVN: r260626
This commit is contained in:
Kalamatee 2018-05-23 22:29:01 +00:00 • committed by Jeff Law
parent 622075181d
commit 54fd159056
2 changed files with 7 additions and 2 deletions
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5
libgcc/ChangeLog
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@ -1,3 +1,8 @@
2018-05-23 Kalamatee <kalamatee@gmail.com>
* config/m68k/lb1sf68.S (Laddsf$nf): Fix sign bit handling in
path to Lf$finfty.
2018-05-18 Kito Cheng <kito.cheng@gmail.com> 2018-05-18 Kito Cheng <kito.cheng@gmail.com>
Monk Chiang <sh.chiang04@gmail.com> Monk Chiang <sh.chiang04@gmail.com>
Jim Wilson <jimw@sifive.com> Jim Wilson <jimw@sifive.com>

4
libgcc/config/m68k/lb1sf68.S
View file

@ -3111,6 +3111,8 @@ Laddsf$nf:
movel a6@(12),d1 | did some processing already) movel a6@(12),d1 | did some processing already)
movel IMM (INFINITY),d4 | useful constant (INFINITY) movel IMM (INFINITY),d4 | useful constant (INFINITY)
movel d0,d2 | save sign bits movel d0,d2 | save sign bits
movel d0,d7 | into d7 as well as we may need the sign
| bit before jumping to LfSinfty
movel d1,d3 movel d1,d3
bclr IMM (31),d0 | clear sign bits bclr IMM (31),d0 | clear sign bits
bclr IMM (31),d1 bclr IMM (31),d1
@ -3125,7 +3127,6 @@ Laddsf$nf:
| are adding or subtracting them. | are adding or subtracting them.
eorl d3,d2 | to check sign bits eorl d3,d2 | to check sign bits
bmi 1f bmi 1f
movel d0,d7
andl IMM (0x80000000),d7 | get (common) sign bit andl IMM (0x80000000),d7 | get (common) sign bit
bra Lf$infty bra Lf$infty
1: 1:
@ -3135,7 +3136,6 @@ Laddsf$nf:
cmpl d1,d0 | are both infinite? cmpl d1,d0 | are both infinite?
beq Lf$inop | if so return NaN beq Lf$inop | if so return NaN
movel d0,d7
andl IMM (0x80000000),d7 | get a's sign bit ' andl IMM (0x80000000),d7 | get a's sign bit '
cmpl d4,d0 | test now for infinity cmpl d4,d0 | test now for infinity
beq Lf$infty | if a is INFINITY return with this sign beq Lf$infty | if a is INFINITY return with this sign