Relax an invariant that block placement was trying to assert a bit

[oota-llvm.git] / test / CodeGen / X86 / iv-users-in-other-loops.ll

diff --git a/test/CodeGen/X86/iv-users-in-other-loops.ll b/test/CodeGen/X86/iv-users-in-other-loops.ll
index c695c29e068f5040d0a5594000089581cc1338cf..7f2bd75560cd3f9415b931a6a5d42a2c136c5050 100644 (file)
--- a/test/CodeGen/X86/iv-users-in-other-loops.ll
+++ b/test/CodeGen/X86/iv-users-in-other-loops.ll
@@ -1,16 +1,19 @@
-; RUN: llc < %s -march=x86-64 -o %t
-; RUN: grep inc %t | count 1
+; RUN: llc < %s -march=x86-64 -enable-lsr-nested -o %t
+; RUN: not grep inc %t
 ; RUN: grep dec %t | count 2
-; RUN: grep addq %t | count 13
+; RUN: grep addq %t | count 12
 ; RUN: not grep addb %t
-; RUN: grep leaq %t | count 9
-; RUN: grep leal %t | count 3
-; RUN: grep movq %t | count 5
+; RUN: not grep leal %t
+; RUN: not grep movq %t
 
 ; IV users in each of the loops from other loops shouldn't cause LSR
 ; to insert new induction variables. Previously it would create a
 ; flood of new induction variables.
 ; Also, the loop reversal should kick in once.
+;
+; In this example, performing LSR on the entire loop nest,
+; as opposed to only the inner loop can further reduce induction variables,
+; and their related instructions and registers.
 
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
 target triple = "x86_64-unknown-linux-gnu"