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ac: replace ac_build_kill with ac_build_kill_if_false

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This will be a new LLVM intrinsic and will also work nicely with
llvm.amdgcn.wqm.vote.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Marek Olšák
2017-10-04 04:51:39 +02:00
parent f0a2bbd1a4
commit 1ff9e27cbd
5 changed files with 49 additions and 78 deletions
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19
src/amd/common/ac_llvm_build.c
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@@ -1405,20 +1405,13 @@ LLVMValueRef ac_build_cvt_pkrtz_f16(struct ac_llvm_context *ctx,
AC_FUNC_ATTR_LEGACY);
}
/**
* KILL, AKA discard in GLSL.
*
* \param value kill if value < 0.0 or value == NULL.
*/
void ac_build_kill(struct ac_llvm_context *ctx, LLVMValueRef value)
void ac_build_kill_if_false(struct ac_llvm_context *ctx, LLVMValueRef i1)
{
if (value) {
ac_build_intrinsic(ctx, "llvm.AMDGPU.kill", ctx->voidt,
&value, 1, AC_FUNC_ATTR_LEGACY);
} else {
ac_build_intrinsic(ctx, "llvm.AMDGPU.kilp", ctx->voidt,
NULL, 0, AC_FUNC_ATTR_LEGACY);
}
LLVMValueRef value = LLVMBuildSelect(ctx->builder, i1,
LLVMConstReal(ctx->f32, 1),
LLVMConstReal(ctx->f32, -1), "");
ac_build_intrinsic(ctx, "llvm.AMDGPU.kill", ctx->voidt,
&value, 1, AC_FUNC_ATTR_LEGACY);
}
LLVMValueRef ac_build_bfe(struct ac_llvm_context *ctx, LLVMValueRef input,