ac: add ac_build_isign()
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
diff --git a/src/amd/common/ac_llvm_build.c b/src/amd/common/ac_llvm_build.c
index 1a245bd..cab8396 100644
--- a/src/amd/common/ac_llvm_build.c
+++ b/src/amd/common/ac_llvm_build.c
@@ -1708,6 +1708,29 @@
return LLVMBuildFSub(ctx->builder, src0, floor, "");
}
+LLVMValueRef ac_build_isign(struct ac_llvm_context *ctx, LLVMValueRef src0,
+ unsigned bitsize)
+{
+ LLVMValueRef cmp, val, zero, one;
+ LLVMTypeRef type;
+
+ if (bitsize == 32) {
+ type = ctx->i32;
+ zero = ctx->i32_0;
+ one = ctx->i32_1;
+ } else {
+ type = ctx->i64;
+ zero = ctx->i64_0;
+ one = ctx->i64_1;
+ }
+
+ cmp = LLVMBuildICmp(ctx->builder, LLVMIntSGT, src0, zero, "");
+ val = LLVMBuildSelect(ctx->builder, cmp, one, src0, "");
+ cmp = LLVMBuildICmp(ctx->builder, LLVMIntSGE, val, zero, "");
+ val = LLVMBuildSelect(ctx->builder, cmp, val, LLVMConstInt(type, -1, true), "");
+ return val;
+}
+
void ac_get_image_intr_name(const char *base_name,
LLVMTypeRef data_type,
LLVMTypeRef coords_type,