From 076e085698c484354c9e131f1bd8fd001581397b Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Tue, 17 Nov 2009 18:10:11 +0000 Subject: Generalize OptimizeLoopTermCond to optimize more loop terminating icmp to use postinc iv. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89116 91177308-0d34-0410-b5e6-96231b3b80d8 --- .../LoopStrengthReduce/icmp_use_postinc.ll | 27 ++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 test/Transforms/LoopStrengthReduce/icmp_use_postinc.ll (limited to 'test') diff --git a/test/Transforms/LoopStrengthReduce/icmp_use_postinc.ll b/test/Transforms/LoopStrengthReduce/icmp_use_postinc.ll new file mode 100644 index 0000000..4ad5d14 --- /dev/null +++ b/test/Transforms/LoopStrengthReduce/icmp_use_postinc.ll @@ -0,0 +1,27 @@ +; RUN: opt < %s -loop-reduce -S | FileCheck %s + +define i32 @main(i32 %argc, i8** nocapture %argv) nounwind ssp { +entry: + br i1 undef, label %bb4.preheader, label %bb.nph8 + +bb4.preheader: ; preds = %entry + br label %bb4 + +bb1: ; preds = %bb4 + br i1 undef, label %bb.nph8, label %bb3 + +bb3: ; preds = %bb1 + %phitmp = add i32 %indvar, 1 ; [#uses=1] + br label %bb4 + +bb4: ; preds = %bb3, %bb4.preheader +; CHECK: %lsr.iv = phi +; CHECK: %lsr.iv.next = add i32 %lsr.iv, 1 +; CHECK: %0 = icmp slt i32 %lsr.iv.next, %argc + %indvar = phi i32 [ 1, %bb4.preheader ], [ %phitmp, %bb3 ] ; [#uses=2] + %0 = icmp slt i32 %indvar, %argc ; [#uses=1] + br i1 %0, label %bb1, label %bb.nph8 + +bb.nph8: ; preds = %bb4, %bb1, %entry + unreachable +} -- cgit v1.1