| ; REQUIRES: asserts |
| ; RUN: opt -loop-reduce -debug-only=loop-reduce -S < %s 2>&1 | FileCheck %s |
| |
| target datalayout = "e-m:e-i64:64-n32:64" |
| target triple = "powerpc64le-unknown-linux-gnu" |
| ; |
| ; %lsr.iv2 and %lsr.iv10 are in same bb, but they are not equal since start |
| ; value are different. |
| ; |
| ; %scevgep = getelementptr [0 x %0], [0 x %0]* %arg, i64 0, i64 99 |
| ; %scevgep1 = bitcast %0* %scevgep to [0 x %0]* |
| ; %lsr.iv2 = phi [0 x %0]* [ %1, %bb18 ], [ %scevgep1, %bb ] |
| ; |
| ; %lsr.iv10 = phi [0 x %0]* [ %2, %bb18 ], [ %arg, %bb ] |
| ; |
| ; Make sure two incomplete phis will not be marked as congruent. |
| ; |
| ; CHECK: One incomplete PHI is found: %[[IV:.*]] = phi [0 x %0]* |
| ; CHECK: One incomplete PHI is found: %[[IV2:.*]] = phi [0 x %0]* |
| ; CHECK-NOT: Eliminated congruent iv: %[[IV]] |
| ; CHECK-NOT: Original iv: %[[IV2]] |
| ; CHECK-NOT: Eliminated congruent iv: %[[IV2]] |
| ; CHECK-NOT: Original iv: %[[IV]] |
| |
| %0 = type <{ float }> |
| |
| define void @foo([0 x %0]* %arg) { |
| bb: |
| %i = getelementptr inbounds [0 x %0], [0 x %0]* %arg, i64 0, i64 -1 |
| %i1 = bitcast %0* %i to i8* |
| %i2 = getelementptr i8, i8* %i1, i64 4 |
| br label %bb3 |
| |
| bb3: ; preds = %bb18, %bb |
| %i4 = phi i64 [ %i20, %bb18 ], [ 0, %bb ] |
| %i5 = phi i64 [ %i21, %bb18 ], [ 1, %bb ] |
| br i1 undef, label %bb22, label %bb9 |
| |
| bb9: ; preds = %bb9, %bb3 |
| %i10 = phi i64 [ 0, %bb3 ], [ %i16, %bb9 ] |
| %i11 = add i64 %i10, %i4 |
| %i12 = shl i64 %i11, 2 |
| %i13 = getelementptr i8, i8* %i2, i64 %i12 |
| %i14 = bitcast i8* %i13 to float* |
| %i15 = bitcast float* %i14 to <4 x float>* |
| store <4 x float> undef, <4 x float>* %i15, align 4 |
| %i16 = add i64 %i10, 32 |
| br i1 true, label %bb17, label %bb9 |
| |
| bb17: ; preds = %bb9 |
| br i1 undef, label %bb18, label %bb22 |
| |
| bb18: ; preds = %bb17 |
| %i19 = add i64 undef, %i4 |
| %i20 = add i64 %i19, %i5 |
| %i21 = add nuw nsw i64 %i5, 1 |
| br label %bb3 |
| |
| bb22: ; preds = %bb22, %bb17, %bb3 |
| %i23 = phi i64 [ %i26, %bb22 ], [ undef, %bb17 ], [ 100, %bb3 ] |
| %i24 = add nsw i64 %i23, %i4 |
| %i25 = getelementptr %0, %0* %i, i64 %i24, i32 0 |
| store float undef, float* %i25, align 4 |
| %i26 = add nuw nsw i64 %i23, 1 |
| br label %bb22 |
| } |