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Remember to preserve input registers if we're going to be reading from them

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after writing to the output register.
This commit is contained in:
David Given 2018-09-09 18:53:49 +02:00
parent e88670dad4
commit bb15c03339
1 changed files with 5 additions and 0 deletions
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5
mach/mips/mcg/table
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@ -363,6 +363,7 @@ PATTERNS
cost 8;
out:(lret)reg = FROMIPAIR.L(in1:(int)reg, in2:(int)reg)
with preserved(%in1), preserved(%in2)
emit "mov %out.0, %in1"
emit "mov %out.1, %in2"
cost 8;
@ -472,6 +473,7 @@ PATTERNS
/* The COMPARE nodes return tristate integer values; -1, 0 or 1. */
out:(int)reg = COMPARESI.I(left:(int)reg, right:(int)reg)
with preserved(%left), preserved(%right)
emit "slt at, %left, %right"
emit "bne at, zero, 1f"
emit "li %out, -1" /* delay slot */
@ -480,6 +482,7 @@ PATTERNS
cost 20;
out:(int)reg = COMPAREUI.I(left:(int)reg, right:(int)reg)
with preserved(%left), preserved(%right)
emit "sltu at, %left, %right"
emit "bne at, zero, 1f"
emit "li %out, -1" /* delay slot */
@ -488,6 +491,7 @@ PATTERNS
cost 20;
out:(int)reg = COMPAREF.I(left:(float)reg, right:(float)reg)
with preserved(%left), preserved(%right)
emit "c.lt.s 0, %left, %right"
emit "li %out, -1"
emit "bc1t 0, 1f"
@ -499,6 +503,7 @@ PATTERNS
cost 28;
out:(int)reg = COMPARED.I(left:(double)reg, right:(double)reg)
with preserved(%left), preserved(%right)
emit "c.lt.d 0, %left, %right"
emit "li %out, -1"
emit "bc1t 0, 1f"