commit f66f017585239582175ccc52b9c110a90f60f07b
Author: Roberto E. Vargas Caballero <Roberto E. Vargas Caballero>
AuthorDate: Fri Apr 22 21:04:30 2016 +0200
Commit: Roberto E. Vargas Caballero <Roberto E. Vargas Caballero>
CommitDate: Fri Apr 22 21:04:30 2016 +0200
[cc2-qbe] Add conversions from float to float
These conversions were lost in the previous commit, and they
were dealt like float to int conversions.
diff --git a/cc2/arch/qbe/arch.h b/cc2/arch/qbe/arch.h
index 031ec6e..ffd44cf 100644
--- a/cc2/arch/qbe/arch.h
+++ b/cc2/arch/qbe/arch.h
@@ -124,5 +124,8 @@ enum asmop {
ASSWTOD,
ASSWTOS,
ASSLTOD,
- ASSLTOS
+ ASSLTOS,
+
+ ASEXTS,
+ ASTRUNCD
};
diff --git a/cc2/arch/qbe/cgen.c b/cc2/arch/qbe/cgen.c
index 300f8dd..9b4e61c 100644
--- a/cc2/arch/qbe/cgen.c
+++ b/cc2/arch/qbe/cgen.c
@@ -168,6 +168,10 @@ cast(Node *nd, Node *ns)
default:
abort();
}
+ /*
+ * unsigned version of operations are always +1 the
+ * signed version
+ */
op += (td->flags & SIGNF) == 0;
} else if (disint) {
/* conversion from float to int */
@@ -182,7 +186,7 @@ cast(Node *nd, Node *ns)
abort();
}
/* TODO: Add signess */
- } else {
+ } else if (sisint) {
/* conversion from int to float */
switch (ts->size) {
case 1:
@@ -201,6 +205,9 @@ cast(Node *nd, Node *ns)
abort();
}
/* TODO: Add signess */
+ } else {
+ /* conversion from float to float */
+ op = (td->size == 4) ? ASEXTS : ASTRUNCD;
}
code(op, tmpnode(nd), ns, NULL);
return nd;
diff --git a/cc2/arch/qbe/code.c b/cc2/arch/qbe/code.c
index 0092576..57170aa 100644
--- a/cc2/arch/qbe/code.c
+++ b/cc2/arch/qbe/code.c
@@ -118,6 +118,9 @@ static struct opdata {
[ASSWTOS] = {.fun = unary, .txt = "swtof", .letter = 's'},
[ASSLTOD] = {.fun = unary, .txt = "sltof", .letter = 'd'},
[ASSLTOS] = {.fun = unary, .txt = "sltof", .letter = 's'},
+
+ [ASEXTS] = {.fun = unary, .txt = "exts", .letter = 'd'},
+ [ASSLTOS]= {.fun = unary, .txt = "truncd", .letter = 's'},
};
/*
