scc

commit 2d4c959def2b5c8a8ed191eaaf75751006309e3d
parent 2982856005245f5793d3150c8b66829ae62d3ec3
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Thu, 31 Mar 2022 13:57:49 +0200

cc2/qbe: Add support for sign in float casts

Float casts were missing the unsigned version of the operators.

Diffstat:
M
src/cmd/cc/cc2/target/qbe/arch.h
 | 
8
++++++++
M
src/cmd/cc/cc2/target/qbe/cgen.c
 | 
12
++++++++++--
M
src/cmd/cc/cc2/target/qbe/code.c
 | 
8
++++++++

3 files changed, 26 insertions(+), 2 deletions(-)
diff --git a/src/cmd/cc/cc2/target/qbe/arch.h b/src/cmd/cc/cc2/target/qbe/arch.h
@@ -100,14 +100,22 @@ enum asmop {
 	ASUEXTWL,
 
 	ASSTOL,
+	ASSTOUL,
 	ASSTOW,
+	ASSTOUW,
 	ASDTOL,
+	ASDTOUL,
 	ASDTOW,
+	ASDTOUW,
 
 	ASSWTOD,
+	ASUWTOD,
 	ASSWTOS,
+	ASUWTOS,
 	ASSLTOD,
+	ASULTOD,
 	ASSLTOS,
+	ASULTOS,
 
 	ASEXTS,
 	ASTRUNCD,
diff --git a/src/cmd/cc/cc2/target/qbe/cgen.c b/src/cmd/cc/cc2/target/qbe/cgen.c
@@ -258,7 +258,11 @@ cast(Type *td, Node *np)
 		default:
 			abort();
 		}
-		/* TODO: Add signess */
+		/*
+		 * unsigned version of operations are always +1 the
+		 * signed version
+		 */
+		op += (td->flags & SIGNF) == 0;
 	} else if (s_isint) {
 		/* conversion from int to float */
 		switch (ts->size) {
@@ -275,7 +279,11 @@ cast(Type *td, Node *np)
 		default:
 			abort();
 		}
-		/* TODO: Add signess */
+		/*
+		 * unsigned version of operations are always +1 the
+		 * signed version
+		 */
+		op += (ts->flags & SIGNF) == 0;
 	} else {
 		/* conversion from float to float */
 		op = (td->size == 4) ? ASEXTS : ASTRUNCD;
diff --git a/src/cmd/cc/cc2/target/qbe/code.c b/src/cmd/cc/cc2/target/qbe/code.c
@@ -125,14 +125,22 @@ static struct opdata {
 	[ASUEXTWL]=  {.fun = unary, .txt = "extuw", .letter = 'l'},
 
 	[ASSTOL] = {.fun = unary, .txt = "stosi", .letter = 'l'},
+	[ASSTOUL] = {.fun = unary, .txt = "stoui", .letter = 'l'},
 	[ASSTOW] = {.fun = unary, .txt = "stosi", .letter = 'w'},
+	[ASSTOUW] = {.fun = unary, .txt = "stoui", .letter = 'w'},
 	[ASDTOL] = {.fun = unary, .txt = "dtosi", .letter = 'l'},
+	[ASDTOUL] = {.fun = unary, .txt = "dtoui", .letter = 'l'},
 	[ASDTOW] = {.fun = unary, .txt = "dtosi", .letter = 'w'},
+	[ASDTOUW] = {.fun = unary, .txt = "dtoui", .letter = 'w'},
 
 	[ASSWTOD] = {.fun = unary, .txt = "swtof", .letter = 'd'},
+	[ASUWTOD] = {.fun = unary, .txt = "uwtof", .letter = 'd'},
 	[ASSWTOS] = {.fun = unary, .txt = "swtof", .letter = 's'},
+	[ASUWTOS] = {.fun = unary, .txt = "uwtof", .letter = 's'},
 	[ASSLTOD] = {.fun = unary, .txt = "sltof", .letter = 'd'},
+	[ASULTOD] = {.fun = unary, .txt = "ultof", .letter = 'd'},
 	[ASSLTOS] = {.fun = unary, .txt = "sltof", .letter = 's'},
+	[ASULTOS] = {.fun = unary, .txt = "ultof", .letter = 's'},
 
 	[ASEXTS] = {.fun = unary, .txt = "exts", .letter = 'd'},
 	[ASTRUNCD] = {.fun = unary, .txt = "truncd", .letter = 's'},