Disable opts for loop on MSL as well.

reference/opt/shaders-msl/comp/loop.comp

@@ -1,169 +0,0 @@
-#include <metal_stdlib>
-#include <simd/simd.h>
-
-using namespace metal;
-
-struct SSBO
-{
-    float4x4 mvp;
-    float4 in_data[1];
-};
-
-struct SSBO2
-{
-    float4 out_data[1];
-};
-
-constant float4 _189 = float4(0);
-constant int _191 = int(0);
-constant uint _196 = uint(0);
-
-kernel void main0(uint3 gl_GlobalInvocationID [[thread_position_in_grid]], device SSBO& _24 [[buffer(0)]], device SSBO2& _177 [[buffer(1)]])
-{
-    int _33;
-    int _50;
-    uint _12;
-    uint _52;
-    uint _79;
-    uint _65;
-    float4 _98;
-    int _100;
-    int _129;
-    uint _127;
-    float4 _123;
-    uint _125;
-    int _145;
-    int _148;
-    int _154;
-    float4 _171;
-    int _185;
-    uint _186;
-    if (_24.in_data[gl_GlobalInvocationID.x].y == 20.0)
-    {
-        int _183;
-        uint _184;
-        _183 = 0;
-        _184 = 0u;
-        for (;;)
-        {
-            _50 = _183 * 2;
-            _52 = _184 + uint(1);
-            if (_52 < gl_GlobalInvocationID.x)
-            {
-                _183 = _50;
-                _184 = _52;
-                continue;
-            }
-            else
-            {
-                break;
-            }
-        }
-        _185 = _50;
-        _186 = _52;
-    }
-    else
-    {
-        _185 = 0;
-        _186 = 0u;
-    }
-    switch (_185)
-    {
-        case 10:
-        {
-            uint _187;
-            _187 = _186;
-            for (;;)
-            {
-                _65 = _187 + uint(1);
-                _187 = _65;
-                continue;
-            }
-            break;
-        }
-        default:
-        {
-            uint _188;
-            _188 = _186;
-            for (;;)
-            {
-                _79 = _188 + 2u;
-                _188 = _79;
-                continue;
-            }
-            break;
-        }
-    }
-    float4 _190;
-    _190 = _189;
-    int _192;
-    _192 = _191;
-    while (_192 < 10)
-    {
-        _98 = _190 * 2.0;
-        _100 = _192 + 1;
-    }
-    float4 _193;
-    _193 = _190;
-    int _194;
-    _194 = _192;
-    uint _195;
-    _195 = 0u;
-    uint _197;
-    _197 = _196;
-    for (; _195 < 16u; _127 = _195 + uint(1), _129 = _194 + 1, _193 = float4 _198, _194 = _129, _195 = _127, _197 = uint _199)
-    {
-        _198 = _193;
-        _199 = 0u;
-        for (; _199 < 30u; _125 = _199 + uint(1), _198 = _123, _199 = _125)
-        {
-            _123 = _24.mvp * _198;
-        }
-    }
-    int _200;
-    _200 = 0;
-    for (;;)
-    {
-        int _135 = _200 + 1;
-        if (_135 > 10)
-        {
-        }
-        else
-        {
-            _145 = _135 + 3;
-            int _201;
-            _201 = _145;
-            _200 = _201;
-            continue;
-        }
-        _148 = (_135 + 2) + 10;
-        _201 = _148;
-        _200 = _201;
-        continue;
-    }
-    int _202;
-    _202 = 0;
-    for (;;)
-    {
-        _154 = _202 + 1;
-        if (_154 > 10)
-        {
-            _202 = _154;
-            continue;
-        }
-        else
-        {
-            break;
-        }
-    }
-    float4 _203;
-    _203 = _189;
-    for (;;)
-    {
-        _171 = _203 + float4(1.0);
-        _203 = _171;
-        continue;
-    }
-    _177.out_data[_196] = _189;
-}
-

reference/shaders-msl/comp/loop.noopt.comp

@@ -0,0 +1,107 @@
+#include <metal_stdlib>
+#include <simd/simd.h>
+
+using namespace metal;
+
+struct SSBO
+{
+    float4x4 mvp;
+    float4 in_data[1];
+};
+
+struct SSBO2
+{
+    float4 out_data[1];
+};
+
+kernel void main0(uint3 gl_GlobalInvocationID [[thread_position_in_grid]], device SSBO& _24 [[buffer(0)]], device SSBO2& _177 [[buffer(1)]])
+{
+    uint ident = gl_GlobalInvocationID.x;
+    float4 idat = _24.in_data[ident];
+    int k = 0;
+    uint i = 0u;
+    if (idat.y == 20.0)
+    {
+        do
+        {
+            k *= 2;
+            i++;
+        } while (i < ident);
+    }
+    switch (k)
+    {
+        case 10:
+        {
+            for (;;)
+            {
+                i++;
+                if (i > 10u)
+                {
+                    break;
+                }
+                continue;
+            }
+            break;
+        }
+        default:
+        {
+            for (;;)
+            {
+                i += 2u;
+                if (i > 20u)
+                {
+                    break;
+                }
+                continue;
+            }
+            break;
+        }
+    }
+    while (k < 10)
+    {
+        idat *= 2.0;
+        k++;
+    }
+    for (uint i_1 = 0u; i_1 < 16u; i_1++, k++)
+    {
+        for (uint j = 0u; j < 30u; j++)
+        {
+            idat = _24.mvp * idat;
+        }
+    }
+    k = 0;
+    for (;;)
+    {
+        k++;
+        if (k > 10)
+        {
+            k += 2;
+        }
+        else
+        {
+            k += 3;
+            continue;
+        }
+        k += 10;
+        continue;
+    }
+    k = 0;
+    do
+    {
+        k++;
+    } while (k > 10);
+    int l = 0;
+    for (;;)
+    {
+        if (l == 5)
+        {
+            l++;
+            continue;
+        }
+        idat += float4(1.0);
+        l++;
+        continue;
+    }
+    _177.out_data[ident] = idat;
+}
+