scc

Simple C99 Compiler
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commit a9ca038e47093dad4d9961bcd5f2e209635dbb79
parent 0480870c8d4e3c273758fc36f149d9634ea516b3
Author: Roberto E. Vargas Caballero <Roberto E. Vargas Caballero>
Date:   Thu, 21 Apr 2016 03:12:53 +0200

[cc2-qbe] Add signed/unsigned version of shr

Shr can extend the sign if the type has sign, so it is important to
differentiate between them.

Diffstat:
cc2/arch/qbe/arch.h | 2++
cc2/arch/qbe/cgen.c | 2+-
cc2/arch/qbe/code.c | 6++++--
3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/cc2/arch/qbe/arch.h b/cc2/arch/qbe/arch.h @@ -17,6 +17,7 @@ enum asmop { ASUDIVW, ASSHLW, ASSHRW, + ASUSHRW, ASLTW, ASULTW, ASGTW, @@ -41,6 +42,7 @@ enum asmop { ASUDIVL, ASSHLL, ASSHRL, + ASUSHRL, ASLTL, ASULTL, ASGTL, diff --git a/cc2/arch/qbe/cgen.c b/cc2/arch/qbe/cgen.c @@ -142,6 +142,7 @@ cgen(Node *np) case OMEM: case OAUTO: return np; + case OSHR: case OMOD: case ODIV: case OLT: @@ -158,7 +159,6 @@ cgen(Node *np) case OSUB: case OMUL: case OSHL: - case OSHR: case OBAND: case OBOR: case OBXOR: diff --git a/cc2/arch/qbe/code.c b/cc2/arch/qbe/code.c @@ -27,7 +27,8 @@ static struct opdata { [ASDIVW] = {.fun = binary, .txt = "div", .letter = 'w'}, [ASUDIVW] = {.fun = binary, .txt = "udiv", .letter = 'w'}, [ASSHLW] = {.fun = binary, .txt = "shl", .letter = 'w'}, - [ASSHRW] = {.fun = binary, .txt = "shr", .letter = 'w'}, + [ASSHRW] = {.fun = binary, .txt = "shrs", .letter = 'w'}, + [ASUSHRW] = {.fun = binary, .txt = "shrz", .letter = 'w'}, [ASLTW] = {.fun = binary, .txt = "csltw", .letter = 'w'}, [ASULTW] = {.fun = binary, .txt = "cultw", .letter = 'w'}, [ASGTW] = {.fun = binary, .txt = "csgtw", .letter = 'w'}, @@ -50,7 +51,8 @@ static struct opdata { [ASDIVL] = {.fun = binary, .txt = "div", .letter = 'l'}, [ASUDIVL] = {.fun = binary, .txt = "udiv", .letter = 'l'}, [ASSHLL] = {.fun = binary, .txt = "shl", .letter = 'l'}, - [ASSHRL] = {.fun = binary, .txt = "shr", .letter = 'l'}, + [ASSHRL] = {.fun = binary, .txt = "shrs", .letter = 'l'}, + [ASUSHRL] = {.fun = binary, .txt = "shrz", .letter = 'l'}, [ASLTL] = {.fun = binary, .txt = "csltl", .letter = 'w'}, [ASULTL] = {.fun = binary, .txt = "cultl", .letter = 'w'}, [ASGTL] = {.fun = binary, .txt = "csgtl", .letter = 'w'},