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radeonsi: add a workaround for a bug in LLVM <= 3.8

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This is not directly applicable to stable and needs to be backported.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Marek Olšák 2016-05-17 23:10:24 +02:00
parent 7671687713
commit 51cf04cf0e
1 changed files with 7 additions and 0 deletions
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7
src/gallium/drivers/radeonsi/si_shader.c
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@ -556,6 +556,13 @@ static LLVMValueRef get_bounded_indirect_index(struct si_shader_context *ctx,
LLVMValueRef c_max = LLVMConstInt(ctx->i32, num - 1, 0);
LLVMValueRef cc;
/* LLVM 3.8: If indirect resource indexing is used:
* - SI & CIK hang
* - VI crashes
*/
if (HAVE_LLVM <= 0x0308)
return LLVMGetUndef(ctx->i32);
if (util_is_power_of_two(num)) {
result = LLVMBuildAnd(builder, result, c_max, "");
} else {