authorgravatar for noam@pixelhero.devNoam Preil <noam@pixelhero.dev> 2020-08-09 18:52:32-04:00
committergravatar for andrew@ziglang.orgAndrew Kelley <andrew@ziglang.org> 2020-08-12 21:58:21-07:00
log78fe86dcd23821b6a40bc5a0067513c452e50265
tree6378572036de9e1880e55bec8ce23bc4a255595b
parentd3eec7d46b1dea6c99dd4beea370a3629843c111

CBE: support unreachable on GCC

3 files changed, 8 insertions(+), 2 deletions(-)

src-self-hosted/cbe.h+5
...@@ -8,3 +8,8 @@...@@ -8,3 +8,8 @@
8#define zig_noreturn8#define zig_noreturn
9#endif9#endif
1010
11#if __GNUC__
12#define zig_unreachable() __builtin_unreachable()
13#else
14#define zig_unreachable()
15#endif
src-self-hosted/codegen/c.zig+1-1
...@@ -178,7 +178,7 @@ fn genBreak(file: *C, inst: *Inst.NoOp, decl: *Decl) !void {...@@ -178,7 +178,7 @@ fn genBreak(file: *C, inst: *Inst.NoOp, decl: *Decl) !void {
178}178}
179179
180fn genUnreach(file: *C, inst: *Inst.NoOp, decl: *Decl) !void {180fn genUnreach(file: *C, inst: *Inst.NoOp, decl: *Decl) !void {
181 // TODO ??181 try file.main.writer().writeAll(" zig_unreachable();\n");
182}182}
183183
184fn genAsm(file: *C, as: *Inst.Assembly, decl: *Decl, argdex: *usize) !void {184fn genAsm(file: *C, as: *Inst.Assembly, decl: *Decl, argdex: *usize) !void {
test/stage2/cbe.zig+2-1
...@@ -65,7 +65,7 @@ pub fn addCases(ctx: *TestContext) !void {...@@ -65,7 +65,7 @@ pub fn addCases(ctx: *TestContext) !void {
65 \\}65 \\}
66 \\66 \\
67 );67 );
68 ctx.c("exit", linux_x64,68 ctx.c("exit with parameter", linux_x64,
69 \\export fn _start() noreturn {69 \\export fn _start() noreturn {
70 \\ exit(0);70 \\ exit(0);
71 \\}71 \\}
...@@ -96,6 +96,7 @@ pub fn addCases(ctx: *TestContext) !void {...@@ -96,6 +96,7 @@ pub fn addCases(ctx: *TestContext) !void {
96 \\ register size_t rax_constant __asm__("rax") = 231;96 \\ register size_t rax_constant __asm__("rax") = 231;
97 \\ register size_t rdi_constant __asm__("rdi") = arg0;97 \\ register size_t rdi_constant __asm__("rdi") = arg0;
98 \\ __asm volatile ("syscall" :: ""(rax_constant), ""(rdi_constant));98 \\ __asm volatile ("syscall" :: ""(rax_constant), ""(rdi_constant));
99 \\ zig_unreachable();
99 \\}100 \\}
100 \\101 \\
101 );102 );