2 files changed, 92 insertions, 0 deletions
diff --git a/test/CodeGen/R600/endcf-loop-header.ll b/test/CodeGen/R600/endcf-loop-header.ll
new file mode 100644
index 000000000000..e3c5b3c1c364
--- /dev/null
+++ b/test/CodeGen/R600/endcf-loop-header.ll
@@ -0,0 +1,34 @@
+; RUN: llc < %s -march=amdgcn -mcpu=SI -verify-machineinstrs | FileCheck %s
+
+; This tests that the llvm.SI.end.cf intrinsic is not inserted into the
+; loop block.  This intrinsic will be lowered to s_or_b64 by the code
+; generator.
+
+; CHECK-LABEL: {{^}}test:
+
+; This is was lowered from the llvm.SI.end.cf intrinsic:
+; CHECK: s_or_b64 exec, exec
+
+; CHECK: [[LOOP_LABEL:[0-9A-Za-z_]+]]: ; %loop{{$}}
+; CHECK-NOT: s_or_b64 exec, exec
+; CHECK: s_cbranch_execnz [[LOOP_LABEL]]
+define void @test(i32 addrspace(1)* %out, i32 %cond) {
+entry:
+  %tmp0 = icmp eq i32 %cond, 0
+  br i1 %tmp0, label %if, label %loop
+
+if:
+  store i32 0, i32 addrspace(1)* %out
+  br label %loop
+
+loop:
+  %tmp1 = phi i32 [0, %entry], [0, %if], [%inc, %loop]
+  %inc = add i32 %tmp1, %cond
+  %tmp2 = icmp ugt i32 %inc, 10
+  br i1 %tmp2, label %done, label %loop
+
+done:
+  %tmp3 = getelementptr i32 addrspace(1)* %out, i64 1
+  store i32 %inc, i32 addrspace(1)* %tmp3
+  ret void
+}
diff --git a/test/CodeGen/R600/tti-unroll-prefs.ll b/test/CodeGen/R600/tti-unroll-prefs.ll
new file mode 100644
index 000000000000..0009c42f79bc
--- /dev/null
+++ b/test/CodeGen/R600/tti-unroll-prefs.ll
@@ -0,0 +1,58 @@
+; RUN: opt -loop-unroll -S -mtriple=amdgcn-- -mcpu=SI %s | FileCheck %s
+
+; This IR comes from this OpenCL C code:
+;
+; if (b + 4 > a) {
+;   for (int i = 0; i < 4; i++, b++) {
+;     if (b + 1 <= a)
+;       *(dst + c + b) = 0;
+;     else
+;       break;
+;   }
+; }
+;
+; This test is meant to check that this loop isn't unrolled into more than
+; four iterations.  The loop unrolling preferences we currently use cause this
+; loop to not be unrolled at all, but that may change in the future.
+
+; CHECK-LABEL: @test
+; CHECK: store i8 0, i8 addrspace(1)*
+; CHECK-NOT: store i8 0, i8 addrspace(1)*
+; CHECK: ret void
+define void @test(i8 addrspace(1)* nocapture %dst, i32 %a, i32 %b, i32 %c) {
+entry:
+  %add = add nsw i32 %b, 4
+  %cmp = icmp sgt i32 %add, %a
+  br i1 %cmp, label %for.cond.preheader, label %if.end7
+
+for.cond.preheader:                               ; preds = %entry
+  %cmp313 = icmp slt i32 %b, %a
+  br i1 %cmp313, label %if.then4.lr.ph, label %if.end7.loopexit
+
+if.then4.lr.ph:                                   ; preds = %for.cond.preheader
+  %0 = sext i32 %c to i64
+  br label %if.then4
+
+if.then4:                                         ; preds = %if.then4.lr.ph, %if.then4
+  %i.015 = phi i32 [ 0, %if.then4.lr.ph ], [ %inc, %if.then4 ]
+  %b.addr.014 = phi i32 [ %b, %if.then4.lr.ph ], [ %add2, %if.then4 ]
+  %add2 = add nsw i32 %b.addr.014, 1
+  %1 = sext i32 %b.addr.014 to i64
+  %add.ptr.sum = add nsw i64 %1, %0
+  %add.ptr5 = getelementptr inbounds i8 addrspace(1)* %dst, i64 %add.ptr.sum
+  store i8 0, i8 addrspace(1)* %add.ptr5, align 1
+  %inc = add nsw i32 %i.015, 1
+  %cmp1 = icmp slt i32 %inc, 4
+  %cmp3 = icmp slt i32 %add2, %a
+  %or.cond = and i1 %cmp3, %cmp1
+  br i1 %or.cond, label %if.then4, label %for.cond.if.end7.loopexit_crit_edge
+
+for.cond.if.end7.loopexit_crit_edge:              ; preds = %if.then4
+  br label %if.end7.loopexit
+
+if.end7.loopexit:                                 ; preds = %for.cond.if.end7.loopexit_crit_edge, %for.cond.preheader
+  br label %if.end7
+
+if.end7:                                          ; preds = %if.end7.loopexit, %entry
+  ret void
+}