<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Fri, Mar 16, 2018 at 5:50 AM, Daniel Schürmann <span dir="ltr"><<a href="mailto:daniel.schuermann@campus.tu-berlin.de" target="_blank">daniel.schuermann@campus.tu-berlin.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Co-authored-by: Connor Abbott <<a href="mailto:cwabbott0@gmail.com">cwabbott0@gmail.com</a>><br>
Signed-off-by: Daniel Schürmann <<a href="mailto:daniel.schuermann@campus.tu-berlin.de">daniel.schuermann@campus.tu-<wbr>berlin.de</a>><br>
---<br>
src/amd/common/ac_llvm_build.c | 475 ++++++++++++++++++++++++++++++<wbr>+++++++++++<br>
src/amd/common/ac_llvm_build.h | 33 ++-<br>
2 files changed, 507 insertions(+), 1 deletion(-)<br>
<br>
diff --git a/src/amd/common/ac_llvm_<wbr>build.c b/src/amd/common/ac_llvm_<wbr>build.c<br>
index 67d15d5cb3..e4ae7fdbcc 100644<br>
--- a/src/amd/common/ac_llvm_<wbr>build.c<br>
+++ b/src/amd/common/ac_llvm_<wbr>build.c<br>
@@ -2426,3 +2426,478 @@ LLVMValueRef ac_unpack_param(struct ac_llvm_context *ctx, LLVMValueRef param,<br>
}<br>
return value;<br>
}<br>
+<br>
+static LLVMValueRef<br>
+_ac_build_readlane(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef lane)<br>
+{<br>
+ ac_build_optimization_barrier(<wbr>ctx, &src);<br>
+ return ac_build_intrinsic(ctx,<br>
+ lane == NULL ? "llvm.amdgcn.readfirstlane" : "llvm.amdgcn.readlane",<br>
+ LLVMTypeOf(src), (LLVMValueRef []) {<br>
+ src, lane },<br>
+ lane == NULL ? 1 : 2,<br>
+ AC_FUNC_ATTR_NOUNWIND |<br></blockquote><div><br></div><div>NOUNWIND is always set by ac_build_intrinsic and doesn't have to be listed here. Same for all NOUNWIND occurences below.<br></div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
+ AC_FUNC_ATTR_READNONE |<br>
+ AC_FUNC_ATTR_CONVERGENT);<br>
+}<br>
+<br>
+/**<br>
+ * Builds the "llvm.amdgcn.readlane" or "llvm.amdgcn.readfirstlane" intrinsic.<br>
+ * @param ctx<br>
+ * @param src<br>
+ * @param lane - id of the lane or NULL for the first active lane<br>
+ * @return value of the lane<br>
+ */<br>
+LLVMValueRef<br>
+ac_build_readlane(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef lane)<br>
+{<br>
+ LLVMTypeRef src_type = LLVMTypeOf(src);<br>
+ src = ac_to_integer(ctx, src);<br>
+ unsigned bits = LLVMGetIntTypeWidth(<wbr>LLVMTypeOf(src));<br>
+ LLVMValueRef ret;<br></blockquote><div><br>add an empty line after declarations<br><br></div><div>Marek<br></div></div></div></div>