[InstructionCombining] prepareICWorklistFromFunction halts in infinite loop with...

[oota-llvm.git] / test / Transforms / LoopUnroll / full-unroll-heuristics.ll

diff --git a/test/Transforms/LoopUnroll/full-unroll-heuristics.ll b/test/Transforms/LoopUnroll/full-unroll-heuristics.ll
index 458828f17c88b27e0c4da42d2462aa703dd402e5..904a65a1bc0e3563b63a7c3ada8fa66b286e872c 100644 (file)
--- a/test/Transforms/LoopUnroll/full-unroll-heuristics.ll
+++ b/test/Transforms/LoopUnroll/full-unroll-heuristics.ll
@@ -1,8 +1,8 @@
 ; In this test we check how heuristics for complete unrolling work. We have
 ; three knobs:
 ;  1) -unroll-threshold
-;  2) -unroll-absolute-threshold and
-;  3) -unroll-percent-of-optimized-for-complete-unroll
+;  3) -unroll-percent-dynamic-cost-saved-threshold and
+;  2) -unroll-dynamic-cost-savings-discount
 ;
 ; They control loop-unrolling according to the following rules:
 ;  * If size of unrolled loop exceeds the absoulte threshold, we don't unroll
@@ -17,10 +17,10 @@
 ; optimizations to remove ~55% of the instructions, the loop body size is 9,
 ; and unrolled size is 65.
 
-; RUN: opt < %s -S -loop-unroll -unroll-max-iteration-count-to-analyze=1000 -unroll-absolute-threshold=10  -unroll-threshold=10  -unroll-percent-of-optimized-for-complete-unroll=30 | FileCheck %s -check-prefix=TEST1
-; RUN: opt < %s -S -loop-unroll -unroll-max-iteration-count-to-analyze=1000 -unroll-absolute-threshold=100 -unroll-threshold=10  -unroll-percent-of-optimized-for-complete-unroll=30 | FileCheck %s -check-prefix=TEST2
-; RUN: opt < %s -S -loop-unroll -unroll-max-iteration-count-to-analyze=1000 -unroll-absolute-threshold=100 -unroll-threshold=10  -unroll-percent-of-optimized-for-complete-unroll=80 | FileCheck %s -check-prefix=TEST3
-; RUN: opt < %s -S -loop-unroll -unroll-max-iteration-count-to-analyze=1000 -unroll-absolute-threshold=100 -unroll-threshold=100 -unroll-percent-of-optimized-for-complete-unroll=80 | FileCheck %s -check-prefix=TEST4
+; RUN: opt < %s -S -loop-unroll -unroll-max-iteration-count-to-analyze=1000 -unroll-threshold=10  -unroll-percent-dynamic-cost-saved-threshold=20 -unroll-dynamic-cost-savings-discount=0 | FileCheck %s -check-prefix=TEST1
+; RUN: opt < %s -S -loop-unroll -unroll-max-iteration-count-to-analyze=1000 -unroll-threshold=10  -unroll-percent-dynamic-cost-saved-threshold=20 -unroll-dynamic-cost-savings-discount=90 | FileCheck %s -check-prefix=TEST2
+; RUN: opt < %s -S -loop-unroll -unroll-max-iteration-count-to-analyze=1000 -unroll-threshold=10  -unroll-percent-dynamic-cost-saved-threshold=80 -unroll-dynamic-cost-savings-discount=90 | FileCheck %s -check-prefix=TEST3
+; RUN: opt < %s -S -loop-unroll -unroll-max-iteration-count-to-analyze=1000 -unroll-threshold=100 -unroll-percent-dynamic-cost-saved-threshold=80 -unroll-dynamic-cost-savings-discount=0 | FileCheck %s -check-prefix=TEST4
 
 ; If the absolute threshold is too low, or if we can't optimize away requested
 ; percent of instructions, we shouldn't unroll:
@@ -47,9 +47,9 @@ loop:                                                ; preds = %loop, %entry
   %iv = phi i64 [ 0, %entry ], [ %inc, %loop ]
   %r  = phi i32 [ 0, %entry ], [ %add, %loop ]
   %arrayidx = getelementptr inbounds i32, i32* %src, i64 %iv
-  %src_element = load i32* %arrayidx, align 4
+  %src_element = load i32, i32* %arrayidx, align 4
   %array_const_idx = getelementptr inbounds [9 x i32], [9 x i32]* @known_constant, i64 0, i64 %iv
-  %const_array_element = load i32* %array_const_idx, align 4
+  %const_array_element = load i32, i32* %array_const_idx, align 4
   %mul = mul nsw i32 %src_element, %const_array_element
   %add = add nsw i32 %mul, %r
   %inc = add nuw nsw i64 %iv, 1