fix missing compiler_rt in release modes

the optimizer was deleting compiler_rt symbols, so I changed
the linkage type from LinkOnce to Weak

also changed LinkOnce to mean linkonce_odr in llvm and
Weak to mean weak_odr in llvm.

See #563

15 files changed, 15 insertions, 19 deletions

diff --git a/std/special/compiler_rt/comparetf2.zig b/std/special/compiler_rt/comparetf2.zig
index 45c7cb5037..f1552ca61f 100644
--- a/std/special/compiler_rt/comparetf2.zig
+++ b/std/special/compiler_rt/comparetf2.zig
@@ -20,7 +20,7 @@ const infRep = exponentMask;
 
 const builtin = @import("builtin");
 const is_test = builtin.is_test;
-const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.LinkOnce;
+const linkage = @import("index.zig").linkage;
 
 export fn __letf2(a: f128, b: f128) -> c_int {
     @setDebugSafety(this, is_test);
diff --git a/std/special/compiler_rt/fixunsdfdi.zig b/std/special/compiler_rt/fixunsdfdi.zig
index 0290ad3975..5f730bbc85 100644
--- a/std/special/compiler_rt/fixunsdfdi.zig
+++ b/std/special/compiler_rt/fixunsdfdi.zig
@@ -1,6 +1,6 @@
 const fixuint = @import("fixuint.zig").fixuint;
 const builtin = @import("builtin");
-const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.LinkOnce;
+const linkage = @import("index.zig").linkage;
 
 export fn __fixunsdfdi(a: f64) -> u64 {
     @setDebugSafety(this, builtin.is_test);
diff --git a/std/special/compiler_rt/fixunsdfsi.zig b/std/special/compiler_rt/fixunsdfsi.zig
index 1dbc2525f2..784d5fde4f 100644
--- a/std/special/compiler_rt/fixunsdfsi.zig
+++ b/std/special/compiler_rt/fixunsdfsi.zig
@@ -1,6 +1,6 @@
 const fixuint = @import("fixuint.zig").fixuint;
 const builtin = @import("builtin");
-const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.LinkOnce;
+const linkage = @import("index.zig").linkage;
 
 export fn __fixunsdfsi(a: f64) -> u32 {
     @setDebugSafety(this, builtin.is_test);
diff --git a/std/special/compiler_rt/fixunsdfti.zig b/std/special/compiler_rt/fixunsdfti.zig
index 33b0e7c274..579455c2f9 100644
--- a/std/special/compiler_rt/fixunsdfti.zig
+++ b/std/special/compiler_rt/fixunsdfti.zig
@@ -1,6 +1,6 @@
 const fixuint = @import("fixuint.zig").fixuint;
 const builtin = @import("builtin");
-const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.LinkOnce;
+const linkage = @import("index.zig").linkage;
 
 export fn __fixunsdfti(a: f64) -> u128 {
     @setDebugSafety(this, builtin.is_test);
diff --git a/std/special/compiler_rt/fixunssfdi.zig b/std/special/compiler_rt/fixunssfdi.zig
index c183f17c62..eab553d8c9 100644
--- a/std/special/compiler_rt/fixunssfdi.zig
+++ b/std/special/compiler_rt/fixunssfdi.zig
@@ -1,6 +1,6 @@
 const fixuint = @import("fixuint.zig").fixuint;
 const builtin = @import("builtin");
-const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.LinkOnce;
+const linkage = @import("index.zig").linkage;
 
 export fn __fixunssfdi(a: f32) -> u64 {
     @setDebugSafety(this, builtin.is_test);
diff --git a/std/special/compiler_rt/fixunssfsi.zig b/std/special/compiler_rt/fixunssfsi.zig
index 51ceef65d3..18c0e66677 100644
--- a/std/special/compiler_rt/fixunssfsi.zig
+++ b/std/special/compiler_rt/fixunssfsi.zig
@@ -1,6 +1,6 @@
 const fixuint = @import("fixuint.zig").fixuint;
 const builtin = @import("builtin");
-const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.LinkOnce;
+const linkage = @import("index.zig").linkage;
 
 export fn __fixunssfsi(a: f32) -> u32 {
     @setDebugSafety(this, builtin.is_test);
diff --git a/std/special/compiler_rt/fixunssfti.zig b/std/special/compiler_rt/fixunssfti.zig
index 69e1c82a9d..f513604247 100644
--- a/std/special/compiler_rt/fixunssfti.zig
+++ b/std/special/compiler_rt/fixunssfti.zig
@@ -1,6 +1,6 @@
 const fixuint = @import("fixuint.zig").fixuint;
 const builtin = @import("builtin");
-const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.LinkOnce;
+const linkage = @import("index.zig").linkage;
 
 export fn __fixunssfti(a: f32) -> u128 {
     @setDebugSafety(this, builtin.is_test);
diff --git a/std/special/compiler_rt/fixunstfdi.zig b/std/special/compiler_rt/fixunstfdi.zig
index a5dbe0f52e..85212e2176 100644
--- a/std/special/compiler_rt/fixunstfdi.zig
+++ b/std/special/compiler_rt/fixunstfdi.zig
@@ -1,6 +1,6 @@
 const fixuint = @import("fixuint.zig").fixuint;
 const builtin = @import("builtin");
-const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.LinkOnce;
+const linkage = @import("index.zig").linkage;
 
 export fn __fixunstfdi(a: f128) -> u64 {
     @setDebugSafety(this, builtin.is_test);
diff --git a/std/special/compiler_rt/fixunstfsi.zig b/std/special/compiler_rt/fixunstfsi.zig
index d488f4c602..33c85c9224 100644
--- a/std/special/compiler_rt/fixunstfsi.zig
+++ b/std/special/compiler_rt/fixunstfsi.zig
@@ -1,6 +1,6 @@
 const fixuint = @import("fixuint.zig").fixuint;
 const builtin = @import("builtin");
-const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.LinkOnce;
+const linkage = @import("index.zig").linkage;
 
 export fn __fixunstfsi(a: f128) -> u32 {
     @setDebugSafety(this, builtin.is_test);
diff --git a/std/special/compiler_rt/fixunstfti.zig b/std/special/compiler_rt/fixunstfti.zig
index fc5c645d72..1bf7fbab4b 100644
--- a/std/special/compiler_rt/fixunstfti.zig
+++ b/std/special/compiler_rt/fixunstfti.zig
@@ -1,6 +1,6 @@
 const fixuint = @import("fixuint.zig").fixuint;
 const builtin = @import("builtin");
-const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.LinkOnce;
+const linkage = @import("index.zig").linkage;
 
 export fn __fixunstfti(a: f128) -> u128 {
     @setDebugSafety(this, builtin.is_test);
diff --git a/std/special/compiler_rt/index.zig b/std/special/compiler_rt/index.zig
index 4a4d71fde9..bea06a0b41 100644
--- a/std/special/compiler_rt/index.zig
+++ b/std/special/compiler_rt/index.zig
@@ -26,7 +26,7 @@ const win32 = builtin.os == builtin.Os.windows and builtin.arch == builtin.Arch.
 const win64 = builtin.os == builtin.Os.windows and builtin.arch == builtin.Arch.x86_64;
 const win32_nocrt = win32 and !builtin.link_libc;
 const win64_nocrt = win64 and !builtin.link_libc;
-const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.LinkOnce;
+pub const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.Weak;
 const strong_linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.Strong;
 
 const __udivmoddi4 = @import("udivmoddi4.zig").__udivmoddi4;
@@ -152,10 +152,6 @@ export nakedcc fn _chkstk() align(4) {
     @setGlobalLinkage(_chkstk, builtin.GlobalLinkage.Internal);
 }
 
-// TODO The implementation from compiler-rt causes crashes and
-// the implementation from disassembled ntdll seems to depend on
-// thread local storage. So we have given up this safety check
-// and simply have `ret`.
 export nakedcc fn __chkstk() align(4) {
     @setDebugSafety(this, false);
 
diff --git a/std/special/compiler_rt/udivmoddi4.zig b/std/special/compiler_rt/udivmoddi4.zig
index 2e167bc64a..8005538d9a 100644
--- a/std/special/compiler_rt/udivmoddi4.zig
+++ b/std/special/compiler_rt/udivmoddi4.zig
@@ -1,6 +1,6 @@
 const udivmod = @import("udivmod.zig").udivmod;
 const builtin = @import("builtin");
-const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.LinkOnce;
+const linkage = @import("index.zig").linkage;
 
 export fn __udivmoddi4(a: u64, b: u64, maybe_rem: ?&u64) -> u64 {
     @setDebugSafety(this, builtin.is_test);
diff --git a/std/special/compiler_rt/udivmodti4.zig b/std/special/compiler_rt/udivmodti4.zig
index d7507e9521..2ee2fdb57f 100644
--- a/std/special/compiler_rt/udivmodti4.zig
+++ b/std/special/compiler_rt/udivmodti4.zig
@@ -1,6 +1,6 @@
 const udivmod = @import("udivmod.zig").udivmod;
 const builtin = @import("builtin");
-const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.LinkOnce;
+const linkage = @import("index.zig").linkage;
 
 export fn __udivmodti4(a: u128, b: u128, maybe_rem: ?&u128) -> u128 {
     @setDebugSafety(this, builtin.is_test);
diff --git a/std/special/compiler_rt/udivti3.zig b/std/special/compiler_rt/udivti3.zig
index 67ea15eb96..3764449758 100644
--- a/std/special/compiler_rt/udivti3.zig
+++ b/std/special/compiler_rt/udivti3.zig
@@ -1,6 +1,6 @@
 const __udivmodti4 = @import("udivmodti4.zig").__udivmodti4;
 const builtin = @import("builtin");
-const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.LinkOnce;
+const linkage = @import("index.zig").linkage;
 
 export fn __udivti3(a: u128, b: u128) -> u128 {
     @setDebugSafety(this, builtin.is_test);
diff --git a/std/special/compiler_rt/umodti3.zig b/std/special/compiler_rt/umodti3.zig
index e4a4e7a7ee..0ad9e127b3 100644
--- a/std/special/compiler_rt/umodti3.zig
+++ b/std/special/compiler_rt/umodti3.zig
@@ -1,6 +1,6 @@
 const __udivmodti4 = @import("udivmodti4.zig").__udivmodti4;
 const builtin = @import("builtin");
-const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.LinkOnce;
+const linkage = @import("index.zig").linkage;
 
 export fn __umodti3(a: u128, b: u128) -> u128 {
     @setDebugSafety(this, builtin.is_test);