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Add support for "switch" statements.

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Switches with both uniform and varying "switch" expressions are
supported.  Switch statements with varying expressions and very
large numbers of labels may not perform well; some issues to be
filed shortly will track opportunities for improving these.
This commit is contained in:
Matt Pharr
2012-01-11 09:15:05 -08:00
parent 9670ab0887
commit b67446d998
26 changed files with 1402 additions and 92 deletions
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18
tests/switch-1.ispc Normal file
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@@ -0,0 +1,18 @@
export uniform int width() { return programCount; }
export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
int a = aFOO[programIndex];
switch (b) {
default:
RET[programIndex] = -1;
break;
case 5:
RET[programIndex] = 0;
}
}
export void result(uniform float RET[]) {
RET[programIndex] = 0;
}

44
tests/switch-10.ispc Normal file
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@@ -0,0 +1,44 @@
export uniform int width() { return programCount; }
int switchit(int a, uniform int b) {
switch (a) {
case 3:
return 1;
case 7:
case 6:
case 4:
case 5:
if (a & 1)
break;
return 2;
case 1: {
switch (a+b) {
case 6:
return 42;
default:
break;
}
return -1234;
}
case 32:
*((int *)NULL) = 0;
default:
return 0;
}
return 3;
}
export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
int a = aFOO[programIndex];
int x = switchit(a, b);
RET[programIndex] = x;
}
export void result(uniform float RET[]) {
RET[programIndex] = 0;
RET[0] = 42;
RET[2] = 1;
RET[6] = RET[4] = 3;
RET[5] = RET[3] = 2;
}

50
tests/switch-11.ispc Normal file
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@@ -0,0 +1,50 @@
export uniform int width() { return programCount; }
int switchit(int a, uniform int b) {
switch (a) {
case 3:
return 1;
case 7:
case 6:
case 4:
case 5:
if (a & 1)
break;
return 2;
case 1: {
switch (a+b) {
case 60:
return -1234;
default:
break;
case 6:
if (b == 5)
break;
return -42;
case 12:
return -1;
}
return 42;
}
case 32:
*((int *)NULL) = 0;
default:
return 0;
}
return 3;
}
export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
int a = aFOO[programIndex];
int x = switchit(a, b);
RET[programIndex] = x;
}
export void result(uniform float RET[]) {
RET[programIndex] = 0;
RET[0] = 42;
RET[2] = 1;
RET[6] = RET[4] = 3;
RET[5] = RET[3] = 2;
}

54
tests/switch-12.ispc Normal file
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@@ -0,0 +1,54 @@
export uniform int width() { return programCount; }
int switchit(int a, uniform int b) {
switch (a) {
case 3:
return 1;
case 7:
case 6:
case 4:
case 5:
if (a & 1)
break;
return 2;
case 1: {
switch (a+b) {
case 60:
return -1234;
default:
break;
case 6:
int count = 0;
for (count = 0; count < 10; ++count) {
a += b;
if (a == 11)
break;
}
return a;
case 12:
return -1;
}
return 42;
}
case 32:
*((int *)NULL) = 0;
default:
return 0;
}
return 3;
}
export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
int a = aFOO[programIndex];
int x = switchit(a, b);
RET[programIndex] = x;
}
export void result(uniform float RET[]) {
RET[programIndex] = 0;
RET[0] = 11;
RET[2] = 1;
RET[6] = RET[4] = 3;
RET[5] = RET[3] = 2;
}

17
tests/switch-2.ispc Normal file
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@@ -0,0 +1,17 @@
export uniform int width() { return programCount; }
export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
int a = aFOO[programIndex];
switch (b) {
default:
RET[programIndex] = -1;
case 5:
RET[programIndex] = 0;
}
}
export void result(uniform float RET[]) {
RET[programIndex] = 0;
}

18
tests/switch-3.ispc Normal file
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@@ -0,0 +1,18 @@
export uniform int width() { return programCount; }
export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
int a = aFOO[programIndex];
switch (b) {
case 5:
RET[programIndex] = 0;
break;
default:
RET[programIndex] = -1;
}
}
export void result(uniform float RET[]) {
RET[programIndex] = 0;
}

24
tests/switch-4.ispc Normal file
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@@ -0,0 +1,24 @@
export uniform int width() { return programCount; }
int switchit(int a, uniform int b) {
int r = 0;
switch (a) {
case 3:
r = 1;
break;
default:
r = 0;
}
return r;
}
export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
int a = aFOO[programIndex];
int x = switchit(a, b);
RET[programIndex] = x;
}
export void result(uniform float RET[]) {
RET[programIndex] = (programIndex == 2) ? 1 : 0;
}

22
tests/switch-5.ispc Normal file
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@@ -0,0 +1,22 @@
export uniform int width() { return programCount; }
int switchit(int a, uniform int b) {
int r = 0;
switch (a) {
case 3:
return 1;
default:
return 0;
}
}
export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
int a = aFOO[programIndex];
int x = switchit(a, b);
RET[programIndex] = x;
}
export void result(uniform float RET[]) {
RET[programIndex] = (programIndex == 2) ? 1 : 0;
}

27
tests/switch-6.ispc Normal file
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@@ -0,0 +1,27 @@
export uniform int width() { return programCount; }
int switchit(int a, uniform int b) {
switch (a) {
case 3:
return 1;
case 7:
if (b == 5)
break;
default:
return 0;
}
return -1;
}
export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
int a = aFOO[programIndex];
int x = switchit(a, b);
RET[programIndex] = x;
}
export void result(uniform float RET[]) {
RET[programIndex] = 0;
RET[2] = 1;
RET[6] = -1;
}

32
tests/switch-7.ispc Normal file
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@@ -0,0 +1,32 @@
export uniform int width() { return programCount; }
int switchit(int a, uniform int b) {
switch (a) {
case 3:
return 1;
case 7:
case 6:
case 4:
case 5:
if (a & 1)
break;
return 2;
default:
return 0;
}
return 3;
}
export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
int a = aFOO[programIndex];
int x = switchit(a, b);
RET[programIndex] = x;
}
export void result(uniform float RET[]) {
RET[programIndex] = 0;
RET[2] = 1;
RET[6] = RET[4] = 3;
RET[5] = RET[3] = 2;
}

36
tests/switch-8.ispc Normal file
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@@ -0,0 +1,36 @@
export uniform int width() { return programCount; }
int switchit(int a, uniform int b) {
switch (a) {
case 3:
return 1;
case 7:
case 6:
case 4:
case 5:
if (a & 1)
break;
return 2;
case 32:
*((int *)NULL) = 0;
//CO default:
case 1:
case 2:
return 0;
}
return 3;
}
export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
int a = aFOO[programIndex];
int x = switchit(a, b);
RET[programIndex] = x;
}
export void result(uniform float RET[]) {
RET[programIndex] = 0;
RET[2] = 1;
RET[6] = RET[4] = 3;
RET[5] = RET[3] = 2;
}

34
tests/switch-9.ispc Normal file
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@@ -0,0 +1,34 @@
export uniform int width() { return programCount; }
int switchit(int a, uniform int b) {
switch (a) {
case 3:
return 1;
case 7:
case 6:
case 4:
case 5:
if (a & 1)
break;
return 2;
case 32:
*((int *)NULL) = 0;
default:
return 0;
}
return 3;
}
export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
int a = aFOO[programIndex];
int x = switchit(a, b);
RET[programIndex] = x;
}
export void result(uniform float RET[]) {
RET[programIndex] = 0;
RET[2] = 1;
RET[6] = RET[4] = 3;
RET[5] = RET[3] = 2;
}