[llvm-commits] [llvm] r154014 - /llvm/trunk/test/Transforms/LoopUnroll/partial-unroll-optsize.ll

[Hongbin Zheng]

Author: ether
Date: Wed Apr  4 08:24:40 2012
New Revision: 154014

URL: http://llvm.org/viewvc/llvm-project?rev=154014&view=rev
Log:
Add testcase for r154007, when a function has the optsize attribute,
  the loop should be unrolled according the value of OptSizeUnrollThreshold.

Added:
    llvm/trunk/test/Transforms/LoopUnroll/partial-unroll-optsize.ll

Added: llvm/trunk/test/Transforms/LoopUnroll/partial-unroll-optsize.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/LoopUnroll/partial-unroll-optsize.ll?rev=154014&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/LoopUnroll/partial-unroll-optsize.ll (added)
+++ llvm/trunk/test/Transforms/LoopUnroll/partial-unroll-optsize.ll Wed Apr  4 08:24:40 2012
@@ -0,0 +1,35 @@
+; RUN: opt < %s -S -loop-unroll -unroll-allow-partial | FileCheck %s
+; Loop size = 3, when the function has the optsize attribute, the
+; OptSizeUnrollThreshold, i.e. 50, is used, hence the loop should be unrolled
+; by 16 times because 3 * 16 < 50.
+define void @unroll_opt_for_size() nounwind optsize {
+entry:
+  br label %loop
+
+loop:
+  %iv = phi i32 [ 0, %entry ], [ %inc, %loop ]
+  %inc = add i32 %iv, 1
+  %exitcnd = icmp uge i32 %inc, 1024
+  br i1 %exitcnd, label %exit, label %loop
+
+exit:
+  ret void
+}
+
+; CHECK:      add
+; CHECK-NEXT: add
+; CHECK-NEXT: add
+; CHECK-NEXT: add
+; CHECK-NEXT: add
+; CHECK-NEXT: add
+; CHECK-NEXT: add
+; CHECK-NEXT: add
+; CHECK-NEXT: add
+; CHECK-NEXT: add
+; CHECK-NEXT: add
+; CHECK-NEXT: add
+; CHECK-NEXT: add
+; CHECK-NEXT: add
+; CHECK-NEXT: add
+; CHECK-NEXT: add
+; CHECK-NEXT: icmp