| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -S < %s -passes=loop-unroll -unroll-count=4 | FileCheck %s |
| ; |
| ; This is a test case that required a number of setup passes because |
| ; it depends on block order. |
| |
| 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-n8:16:32:64" |
| target triple = "x86_64-apple-macosx10.6.8" |
| |
| declare i1 @check() nounwind |
| declare i32 @getval() nounwind |
| |
| ; Check that the loop exit merges values from all the iterations. This |
| ; could be a tad fragile, but it's a good test. |
| ; |
| define i32 @foo() { |
| ; |
| ; CHECK-LABEL: @foo( |
| ; CHECK-NEXT: if.end: |
| ; CHECK-NEXT: [[CALL2:%.*]] = call i32 @getval() |
| ; CHECK-NEXT: br label [[LAND_LHS_TRUE_I:%.*]] |
| ; CHECK: land.lhs.true.i: |
| ; CHECK-NEXT: [[CMP4_I:%.*]] = call zeroext i1 @check() |
| ; CHECK-NEXT: br i1 [[CMP4_I]], label [[BAR_EXIT:%.*]], label [[DO_COND:%.*]] |
| ; CHECK: bar.exit: |
| ; CHECK-NEXT: [[TMP7_I:%.*]] = call i32 @getval() |
| ; CHECK-NEXT: [[CMP_NOT:%.*]] = icmp eq i32 [[TMP7_I]], 0 |
| ; CHECK-NEXT: br i1 [[CMP_NOT]], label [[DO_COND]], label [[LAND_LHS_TRUE:%.*]] |
| ; CHECK: land.lhs.true: |
| ; CHECK-NEXT: [[CALL10:%.*]] = call i32 @getval() |
| ; CHECK-NEXT: [[CMP11:%.*]] = icmp eq i32 [[CALL10]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11]], label [[RETURN:%.*]], label [[DO_COND]] |
| ; CHECK: do.cond: |
| ; CHECK-NEXT: [[CMP18:%.*]] = icmp sgt i32 [[CALL2]], -1 |
| ; CHECK-NEXT: br i1 [[CMP18]], label [[LAND_LHS_TRUE_I_1:%.*]], label [[RETURN]] |
| ; CHECK: land.lhs.true.i.1: |
| ; CHECK-NEXT: [[CMP4_I_1:%.*]] = call zeroext i1 @check() |
| ; CHECK-NEXT: br i1 [[CMP4_I_1]], label [[BAR_EXIT_1:%.*]], label [[DO_COND_1:%.*]] |
| ; CHECK: bar.exit.1: |
| ; CHECK-NEXT: [[TMP7_I_1:%.*]] = call i32 @getval() |
| ; CHECK-NEXT: [[CMP_NOT_1:%.*]] = icmp eq i32 [[TMP7_I_1]], 0 |
| ; CHECK-NEXT: br i1 [[CMP_NOT_1]], label [[DO_COND_1]], label [[LAND_LHS_TRUE_1:%.*]] |
| ; CHECK: land.lhs.true.1: |
| ; CHECK-NEXT: [[CALL10_1:%.*]] = call i32 @getval() |
| ; CHECK-NEXT: [[CMP11_1:%.*]] = icmp eq i32 [[CALL10_1]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11_1]], label [[RETURN]], label [[DO_COND_1]] |
| ; CHECK: do.cond.1: |
| ; CHECK-NEXT: [[CMP18_1:%.*]] = icmp sgt i32 [[CALL2]], -1 |
| ; CHECK-NEXT: br i1 [[CMP18_1]], label [[LAND_LHS_TRUE_I_2:%.*]], label [[RETURN]] |
| ; CHECK: land.lhs.true.i.2: |
| ; CHECK-NEXT: [[CMP4_I_2:%.*]] = call zeroext i1 @check() |
| ; CHECK-NEXT: br i1 [[CMP4_I_2]], label [[BAR_EXIT_2:%.*]], label [[DO_COND_2:%.*]] |
| ; CHECK: bar.exit.2: |
| ; CHECK-NEXT: [[TMP7_I_2:%.*]] = call i32 @getval() |
| ; CHECK-NEXT: [[CMP_NOT_2:%.*]] = icmp eq i32 [[TMP7_I_2]], 0 |
| ; CHECK-NEXT: br i1 [[CMP_NOT_2]], label [[DO_COND_2]], label [[LAND_LHS_TRUE_2:%.*]] |
| ; CHECK: land.lhs.true.2: |
| ; CHECK-NEXT: [[CALL10_2:%.*]] = call i32 @getval() |
| ; CHECK-NEXT: [[CMP11_2:%.*]] = icmp eq i32 [[CALL10_2]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11_2]], label [[RETURN]], label [[DO_COND_2]] |
| ; CHECK: do.cond.2: |
| ; CHECK-NEXT: [[CMP18_2:%.*]] = icmp sgt i32 [[CALL2]], -1 |
| ; CHECK-NEXT: br i1 [[CMP18_2]], label [[LAND_LHS_TRUE_I_3:%.*]], label [[RETURN]] |
| ; CHECK: land.lhs.true.i.3: |
| ; CHECK-NEXT: [[CMP4_I_3:%.*]] = call zeroext i1 @check() |
| ; CHECK-NEXT: br i1 [[CMP4_I_3]], label [[BAR_EXIT_3:%.*]], label [[DO_COND_3:%.*]] |
| ; CHECK: bar.exit.3: |
| ; CHECK-NEXT: [[TMP7_I_3:%.*]] = call i32 @getval() |
| ; CHECK-NEXT: [[CMP_NOT_3:%.*]] = icmp eq i32 [[TMP7_I_3]], 0 |
| ; CHECK-NEXT: br i1 [[CMP_NOT_3]], label [[DO_COND_3]], label [[LAND_LHS_TRUE_3:%.*]] |
| ; CHECK: land.lhs.true.3: |
| ; CHECK-NEXT: [[CALL10_3:%.*]] = call i32 @getval() |
| ; CHECK-NEXT: [[CMP11_3:%.*]] = icmp eq i32 [[CALL10_3]], 0 |
| ; CHECK-NEXT: br i1 [[CMP11_3]], label [[RETURN]], label [[DO_COND_3]] |
| ; CHECK: do.cond.3: |
| ; CHECK-NEXT: [[CMP18_3:%.*]] = icmp sgt i32 [[CALL2]], -1 |
| ; CHECK-NEXT: br i1 [[CMP18_3]], label [[LAND_LHS_TRUE_I]], label [[RETURN]], !llvm.loop [[LOOP0:![0-9]+]] |
| ; CHECK: return: |
| ; CHECK-NEXT: [[RETVAL_0:%.*]] = phi i32 [ [[TMP7_I]], [[LAND_LHS_TRUE]] ], [ 0, [[DO_COND]] ], [ [[TMP7_I_1]], [[LAND_LHS_TRUE_1]] ], [ 0, [[DO_COND_1]] ], [ [[TMP7_I_2]], [[LAND_LHS_TRUE_2]] ], [ 0, [[DO_COND_2]] ], [ [[TMP7_I_3]], [[LAND_LHS_TRUE_3]] ], [ 0, [[DO_COND_3]] ] |
| ; CHECK-NEXT: ret i32 [[RETVAL_0]] |
| ; |
| if.end: |
| %call2 = call i32 @getval() |
| br label %land.lhs.true.i |
| |
| land.lhs.true.i: ; preds = %if.end, %do.cond |
| %cmp4.i = call zeroext i1 @check() #0 |
| br i1 %cmp4.i, label %bar.exit, label %do.cond |
| |
| bar.exit: ; preds = %land.lhs.true.i |
| %tmp7.i = call i32 @getval() #0 |
| %cmp.not = icmp eq i32 %tmp7.i, 0 |
| br i1 %cmp.not, label %do.cond, label %land.lhs.true |
| |
| land.lhs.true: ; preds = %bar.exit |
| %call10 = call i32 @getval() |
| %cmp11 = icmp eq i32 %call10, 0 |
| br i1 %cmp11, label %return, label %do.cond |
| |
| do.cond: ; preds = %land.lhs.true.i, %land.lhs.true, %bar.exit |
| %cmp18 = icmp sgt i32 %call2, -1 |
| br i1 %cmp18, label %land.lhs.true.i, label %return |
| |
| return: ; preds = %do.cond, %land.lhs.true |
| %retval.0 = phi i32 [ %tmp7.i, %land.lhs.true ], [ 0, %do.cond ] |
| ret i32 %retval.0 |
| } |
