ref: 47165e1c2ccc0471349691cc92f64f81984b18c5
parent: 090af6255bebf0129c891116b53b31808fe49dc7
author: Sigrid Solveig Haflínudóttir <sigrid@ftrv.se>
date: Mon May 8 22:17:34 EDT 2023
5c, 7c: fix !x compilation when x is a negative float test case: void main(int, char **) { union { float f; u32int u; }x; x.u = 1U<<31; print("%d %d\n", !x.f, x.f == 0.0f); exits(nil); }
--- a/sys/src/cmd/5c/cgen.c
+++ b/sys/src/cmd/5c/cgen.c
@@ -729,9 +729,12 @@
o = ONE;
if(true)
o = comrel[relindex(o)];
- if(typefd[n->type->etype]) {
- gopcode(true ? o | BTRUE : o, nodfconst(0), &nod, Z);
- } else
+ if(typefd[n->type->etype]){
+ regalloc(&nod1, n, Z);
+ gmove(nodfconst(0.0), &nod1);
+ gopcode(true ? o | BTRUE : o, &nod1, &nod, Z);
+ regfree(&nod1);
+ }else
gopcode(o, nodconst(0), &nod, Z);
regfree(&nod);
goto com;
--- a/sys/src/cmd/7c/cgen.c
+++ b/sys/src/cmd/7c/cgen.c
@@ -738,8 +738,11 @@
if(true)
o = OEQ;
if(typefd[n->type->etype]) {
- gopcode(true ? o | BTRUE : o, nodfconst(0), &nod, Z);
- } else
+ regalloc(&nod1, n, Z);
+ gmove(nodfconst(0.0), &nod1);
+ gopcode(true ? o | BTRUE : o, &nod1, &nod, Z);
+ regfree(&nod1);
+ }else
gopcode(o, nodconst(0), &nod, Z);
regfree(&nod);
goto com;