Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833

external/llvm/test/CodeGen/Hexagon/bugAsmHWloop.ll

@@ -0,0 +1,71 @@
+; RUN: llc -march=hexagon < %s | FileCheck %s
+
+; CHECK: {
+; CHECK: loop0(.LBB
+; CHECK-NOT: loop0(##.LBB
+
+target datalayout = "e-p:32:32:32-i64:64:64-i32:32:32-i16:16:16-i1:32:32-f64:64:64-f32:32:32-v64:64:64-v32:32:32-a0:0-n16:32"
+target triple = "hexagon"
+
+define i32 @q6zip_uncompress(i8* %out_buf, i32* %out_buf_size, i8* %in_buf, i32 %in_buf_size, i8* nocapture %dict, i32 %dict_size) nounwind {
+entry:
+  %0 = bitcast i8* %in_buf to i32*
+  %incdec.ptr = getelementptr inbounds i8, i8* %in_buf, i32 4
+  %1 = load i32, i32* %0, align 4, !tbaa !0
+  %2 = ptrtoint i8* %incdec.ptr to i32
+  %and.i = and i32 %2, 31
+  %sub.i = sub i32 %2, %and.i
+  %3 = inttoptr i32 %sub.i to i8*
+  %add.i = add i32 %in_buf_size, 31
+  %sub2.i = add i32 %add.i, %and.i
+  %div.i = lshr i32 %sub2.i, 5
+  %4 = tail call i32 @llvm.hexagon.A2.combine.ll(i32 32, i32 %div.i) nounwind
+  %5 = tail call i64 @llvm.hexagon.A4.combineir(i32 32, i32 %4) nounwind
+  tail call void asm sideeffect "l2fetch($0,$1)", "r,r,~{memory}"(i8* %3, i64 %5) nounwind, !srcloc !3
+  %6 = ptrtoint i8* %out_buf to i32
+  br label %for.body.i
+
+for.body.i:                                       ; preds = %for.body.i, %entry
+  %i.02.i = phi i32 [ 0, %entry ], [ %inc.i, %for.body.i ]
+  %addr.addr.01.i = phi i32 [ %6, %entry ], [ %add.i14, %for.body.i ]
+  tail call void asm sideeffect "dczeroa($0)", "r"(i32 %addr.addr.01.i) nounwind, !srcloc !4
+  %add.i14 = add i32 %addr.addr.01.i, 32
+  %inc.i = add i32 %i.02.i, 1
+  %exitcond.i = icmp eq i32 %inc.i, 128
+  br i1 %exitcond.i, label %while.cond.preheader, label %for.body.i
+
+while.cond.preheader:                             ; preds = %for.body.i
+  %and = and i32 %1, 3
+  switch i32 %and, label %infloop.preheader [
+    i32 0, label %exit_inflate.split
+    i32 2, label %if.then.preheader
+  ]
+
+if.then.preheader:                                ; preds = %while.cond.preheader
+  br label %if.then
+
+infloop.preheader:                                ; preds = %while.cond.preheader
+  br label %infloop
+
+if.then:                                          ; preds = %if.then.preheader, %if.then
+  tail call void @llvm.prefetch(i8* %incdec.ptr, i32 0, i32 3, i32 1)
+  br label %if.then
+
+exit_inflate.split:                               ; preds = %while.cond.preheader
+  ret i32 0
+
+infloop:                                          ; preds = %infloop.preheader, %infloop
+  br label %infloop
+}
+
+declare void @llvm.prefetch(i8* nocapture, i32, i32, i32) nounwind
+
+declare i64 @llvm.hexagon.A4.combineir(i32, i32) nounwind readnone
+
+declare i32 @llvm.hexagon.A2.combine.ll(i32, i32) nounwind readnone
+
+!0 = !{!"long", !1}
+!1 = !{!"omnipotent char", !2}
+!2 = !{!"Simple C/C++ TBAA"}
+!3 = !{i32 18362}
+!4 = !{i32 18893}