| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -S -jump-threading-freeze-select-cond -jump-threading < %s | FileCheck %s |
| |
| declare void @foo() |
| declare void @bar() |
| declare void @baz() |
| declare void @quux() |
| |
| |
| define void @test_switch_cmp(i1 %cond, i32 %val, i8 %value) nounwind { |
| ; CHECK-LABEL: @test_switch_cmp( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br i1 [[COND:%.*]], label [[L0:%.*]], label [[L0_THREAD:%.*]] |
| ; CHECK: L0: |
| ; CHECK-NEXT: [[VAL_PHI:%.*]] = phi i32 [ [[VAL:%.*]], [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[VAL_PHI]], 0 |
| ; CHECK-NEXT: [[COND_FR:%.*]] = freeze i1 [[CMP]] |
| ; CHECK-NEXT: br i1 [[COND_FR]], label [[L1:%.*]], label [[TMP0:%.*]] |
| ; CHECK: 0: |
| ; CHECK-NEXT: [[TMP1:%.*]] = phi i8 [ [[VALUE:%.*]], [[L0]] ] |
| ; CHECK-NEXT: switch i8 [[TMP1]], label [[L3:%.*]] [ |
| ; CHECK-NEXT: i8 1, label [[L1]] |
| ; CHECK-NEXT: i8 2, label [[L2:%.*]] |
| ; CHECK-NEXT: ] |
| ; CHECK: L1: |
| ; CHECK-NEXT: call void @foo() |
| ; CHECK-NEXT: ret void |
| ; CHECK: L2: |
| ; CHECK-NEXT: call void @bar() |
| ; CHECK-NEXT: ret void |
| ; CHECK: L3: |
| ; CHECK-NEXT: call void @baz() |
| ; CHECK-NEXT: ret void |
| ; CHECK: L0.thread: |
| ; CHECK-NEXT: call void @quux() |
| ; CHECK-NEXT: br label [[L1]] |
| ; |
| entry: |
| br i1 %cond, label %L0, label %L4 |
| L0: |
| %val.phi = phi i32 [%val, %entry], [-1, %L4] |
| %cmp = icmp slt i32 %val.phi, 0 |
| %expr = select i1 %cmp, i8 1, i8 %value |
| switch i8 %expr, label %L3 [i8 1, label %L1 i8 2, label %L2] |
| |
| L1: |
| call void @foo() |
| ret void |
| L2: |
| call void @bar() |
| ret void |
| L3: |
| call void @baz() |
| ret void |
| L4: |
| call void @quux() |
| br label %L0 |
| } |
| |
| define i32 @unfold3(i32 %u, i32 %v, i32 %w, i32 %x, i32 %y, i32 %z, i32 %j) nounwind { |
| ; CHECK-LABEL: @unfold3( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[ADD3:%.*]] = add nsw i32 [[J:%.*]], 2 |
| ; CHECK-NEXT: [[CMP_I:%.*]] = icmp slt i32 [[U:%.*]], [[V:%.*]] |
| ; CHECK-NEXT: br i1 [[CMP_I]], label [[DOTEXIT_THREAD4:%.*]], label [[COND_FALSE_I:%.*]] |
| ; CHECK: cond.false.i: |
| ; CHECK-NEXT: [[CMP4_I:%.*]] = icmp sgt i32 [[U]], [[V]] |
| ; CHECK-NEXT: br i1 [[CMP4_I]], label [[DOTEXIT_THREAD:%.*]], label [[COND_FALSE_6_I:%.*]] |
| ; CHECK: cond.false.6.i: |
| ; CHECK-NEXT: [[CMP8_I:%.*]] = icmp slt i32 [[W:%.*]], [[X:%.*]] |
| ; CHECK-NEXT: br i1 [[CMP8_I]], label [[DOTEXIT_THREAD4]], label [[COND_FALSE_10_I:%.*]] |
| ; CHECK: cond.false.10.i: |
| ; CHECK-NEXT: [[CMP13_I:%.*]] = icmp sgt i32 [[W]], [[X]] |
| ; CHECK-NEXT: br i1 [[CMP13_I]], label [[DOTEXIT_THREAD]], label [[DOTEXIT:%.*]] |
| ; CHECK: .exit: |
| ; CHECK-NEXT: [[PHITMP:%.*]] = icmp sge i32 [[Y:%.*]], [[Z:%.*]] |
| ; CHECK-NEXT: [[COND_FR:%.*]] = freeze i1 [[PHITMP]] |
| ; CHECK-NEXT: br i1 [[COND_FR]], label [[DOTEXIT_THREAD]], label [[DOTEXIT_THREAD4]] |
| ; CHECK: .exit.thread: |
| ; CHECK-NEXT: br label [[DOTEXIT_THREAD4]] |
| ; CHECK: .exit.thread4: |
| ; CHECK-NEXT: [[TMP0:%.*]] = phi i32 [ [[J]], [[DOTEXIT_THREAD]] ], [ [[ADD3]], [[DOTEXIT]] ], [ [[ADD3]], [[ENTRY:%.*]] ], [ [[ADD3]], [[COND_FALSE_6_I]] ] |
| ; CHECK-NEXT: ret i32 [[TMP0]] |
| ; |
| entry: |
| %add3 = add nsw i32 %j, 2 |
| %cmp.i = icmp slt i32 %u, %v |
| br i1 %cmp.i, label %.exit, label %cond.false.i |
| |
| cond.false.i: ; preds = %entry |
| %cmp4.i = icmp sgt i32 %u, %v |
| br i1 %cmp4.i, label %.exit, label %cond.false.6.i |
| |
| cond.false.6.i: ; preds = %cond.false.i |
| %cmp8.i = icmp slt i32 %w, %x |
| br i1 %cmp8.i, label %.exit, label %cond.false.10.i |
| |
| cond.false.10.i: ; preds = %cond.false.6.i |
| %cmp13.i = icmp sgt i32 %w, %x |
| br i1 %cmp13.i, label %.exit, label %cond.false.15.i |
| |
| cond.false.15.i: ; preds = %cond.false.10.i |
| %phitmp = icmp sge i32 %y, %z |
| br label %.exit |
| |
| .exit: ; preds = %entry, %cond.false.i, %cond.false.6.i, %cond.false.10.i, %cond.false.15.i |
| %cond23.i = phi i1 [ false, %entry ], [ true, %cond.false.i ], [ false, %cond.false.6.i ], [ %phitmp, %cond.false.15.i ], [ true, %cond.false.10.i ] |
| %j.add3 = select i1 %cond23.i, i32 %j, i32 %add3 |
| ret i32 %j.add3 |
| } |
| |
| define i32 @unfold4(i32 %u, i32 %v, i32 %w, i32 %x, i32 %y, i32 %z, i32 %j) nounwind { |
| ; CHECK-LABEL: @unfold4( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[ADD3:%.*]] = add nsw i32 [[J:%.*]], 2 |
| ; CHECK-NEXT: [[CMP_I:%.*]] = icmp slt i32 [[U:%.*]], [[V:%.*]] |
| ; CHECK-NEXT: br i1 [[CMP_I]], label [[DOTEXIT_THREAD:%.*]], label [[COND_FALSE_I:%.*]] |
| ; CHECK: cond.false.i: |
| ; CHECK-NEXT: [[CMP4_I:%.*]] = icmp sgt i32 [[U]], [[V]] |
| ; CHECK-NEXT: br i1 [[CMP4_I]], label [[DOTEXIT_THREAD5:%.*]], label [[COND_FALSE_6_I:%.*]] |
| ; CHECK: cond.false.6.i: |
| ; CHECK-NEXT: [[CMP8_I:%.*]] = icmp slt i32 [[W:%.*]], [[X:%.*]] |
| ; CHECK-NEXT: br i1 [[CMP8_I]], label [[DOTEXIT_THREAD]], label [[COND_FALSE_10_I:%.*]] |
| ; CHECK: cond.false.10.i: |
| ; CHECK-NEXT: [[CMP13_I:%.*]] = icmp sgt i32 [[W]], [[X]] |
| ; CHECK-NEXT: br i1 [[CMP13_I]], label [[DOTEXIT_THREAD5]], label [[DOTEXIT:%.*]] |
| ; CHECK: .exit: |
| ; CHECK-NEXT: [[CMP19_I:%.*]] = icmp sge i32 [[Y:%.*]], [[Z:%.*]] |
| ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP19_I]] to i32 |
| ; CHECK-NEXT: [[LNOT_I18:%.*]] = icmp eq i32 [[CONV]], 1 |
| ; CHECK-NEXT: [[COND_FR:%.*]] = freeze i1 [[LNOT_I18]] |
| ; CHECK-NEXT: br i1 [[COND_FR]], label [[DOTEXIT_THREAD]], label [[DOTEXIT_THREAD5]] |
| ; CHECK: .exit.thread: |
| ; CHECK-NEXT: br label [[DOTEXIT_THREAD5]] |
| ; CHECK: .exit.thread5: |
| ; CHECK-NEXT: [[TMP0:%.*]] = phi i32 [ [[J]], [[DOTEXIT_THREAD]] ], [ [[ADD3]], [[DOTEXIT]] ], [ [[ADD3]], [[COND_FALSE_I]] ], [ [[ADD3]], [[COND_FALSE_10_I]] ] |
| ; CHECK-NEXT: ret i32 [[TMP0]] |
| ; |
| entry: |
| %add3 = add nsw i32 %j, 2 |
| %cmp.i = icmp slt i32 %u, %v |
| br i1 %cmp.i, label %.exit, label %cond.false.i |
| |
| cond.false.i: ; preds = %entry |
| %cmp4.i = icmp sgt i32 %u, %v |
| br i1 %cmp4.i, label %.exit, label %cond.false.6.i |
| |
| cond.false.6.i: ; preds = %cond.false.i |
| %cmp8.i = icmp slt i32 %w, %x |
| br i1 %cmp8.i, label %.exit, label %cond.false.10.i |
| |
| cond.false.10.i: ; preds = %cond.false.6.i |
| %cmp13.i = icmp sgt i32 %w, %x |
| br i1 %cmp13.i, label %.exit, label %cond.false.15.i |
| |
| cond.false.15.i: ; preds = %cond.false.10.i |
| %cmp19.i = icmp sge i32 %y, %z |
| %conv = zext i1 %cmp19.i to i32 |
| br label %.exit |
| |
| .exit: ; preds = %entry, %cond.false.i, %cond.false.6.i, %cond.false.10.i, %cond.false.15.i |
| %cond23.i = phi i32 [ 1, %entry ], [ 0, %cond.false.i ], [ 1, %cond.false.6.i ], [ %conv, %cond.false.15.i ], [ 0, %cond.false.10.i ] |
| %lnot.i18 = icmp eq i32 %cond23.i, 1 |
| %j.add3 = select i1 %lnot.i18, i32 %j, i32 %add3 |
| ret i32 %j.add3 |
| } |
| |
| ; TODO: cond23_i should be constant-folded. |
| define i32 @unfold5(i32 %u, i32 %v, i32 %w, i32 %x, i32 %y, i32 %z, i32 %j) nounwind { |
| ; CHECK-LABEL: @unfold5( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[ADD3:%.*]] = add nsw i32 [[J:%.*]], 2 |
| ; CHECK-NEXT: [[CMP_I:%.*]] = icmp slt i32 [[U:%.*]], [[V:%.*]] |
| ; CHECK-NEXT: br i1 [[CMP_I]], label [[DOTEXIT_THREAD:%.*]], label [[COND_FALSE_I:%.*]] |
| ; CHECK: cond.false.i: |
| ; CHECK-NEXT: [[CMP4_I:%.*]] = icmp sgt i32 [[U]], [[V]] |
| ; CHECK-NEXT: br i1 [[CMP4_I]], label [[DOTEXIT_THREAD]], label [[COND_FALSE_6_I:%.*]] |
| ; CHECK: cond.false.6.i: |
| ; CHECK-NEXT: [[CMP8_I:%.*]] = icmp slt i32 [[W:%.*]], [[X:%.*]] |
| ; CHECK-NEXT: br i1 [[CMP8_I]], label [[DOTEXIT_THREAD]], label [[COND_FALSE_10_I:%.*]] |
| ; CHECK: cond.false.10.i: |
| ; CHECK-NEXT: [[CMP13_I:%.*]] = icmp sgt i32 [[W]], [[X]] |
| ; CHECK-NEXT: br i1 [[CMP13_I]], label [[TMP0:%.*]], label [[COND_FALSE_15_I:%.*]] |
| ; CHECK: cond.false.15.i: |
| ; CHECK-NEXT: [[CMP19_I:%.*]] = icmp sge i32 [[Y:%.*]], [[Z:%.*]] |
| ; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP19_I]] to i32 |
| ; CHECK-NEXT: br label [[DOTEXIT_THREAD]] |
| ; CHECK: 0: |
| ; CHECK-NEXT: [[COND23_I:%.*]] = phi i32 [ 7, [[COND_FALSE_10_I]] ] |
| ; CHECK-NEXT: [[LNOT_I18:%.*]] = icmp sgt i32 [[COND23_I]], 5 |
| ; CHECK-NEXT: br label [[DOTEXIT_THREAD]] |
| ; CHECK: .exit.thread: |
| ; CHECK-NEXT: [[TMP1:%.*]] = phi i32 [ [[J]], [[TMP0]] ], [ [[CONV]], [[COND_FALSE_15_I]] ], [ 1, [[COND_FALSE_6_I]] ], [ 3, [[COND_FALSE_I]] ], [ 2, [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: ret i32 [[TMP1]] |
| ; |
| entry: |
| %add3 = add nsw i32 %j, 2 |
| %cmp.i = icmp slt i32 %u, %v |
| br i1 %cmp.i, label %.exit, label %cond.false.i |
| |
| cond.false.i: ; preds = %entry |
| %cmp4.i = icmp sgt i32 %u, %v |
| br i1 %cmp4.i, label %.exit, label %cond.false.6.i |
| |
| cond.false.6.i: ; preds = %cond.false.i |
| %cmp8.i = icmp slt i32 %w, %x |
| br i1 %cmp8.i, label %.exit, label %cond.false.10.i |
| |
| cond.false.10.i: ; preds = %cond.false.6.i |
| %cmp13.i = icmp sgt i32 %w, %x |
| br i1 %cmp13.i, label %.exit, label %cond.false.15.i |
| |
| cond.false.15.i: ; preds = %cond.false.10.i |
| %cmp19.i = icmp sge i32 %y, %z |
| %conv = zext i1 %cmp19.i to i32 |
| br label %.exit |
| |
| .exit: ; preds = %entry, %cond.false.i, %cond.false.6.i, %cond.false.10.i, %cond.false.15.i |
| %cond23.i = phi i32 [ 2, %entry ], [ 3, %cond.false.i ], [ 1, %cond.false.6.i ], [ %conv, %cond.false.15.i ], [ 7, %cond.false.10.i ] |
| %lnot.i18 = icmp sgt i32 %cond23.i, 5 |
| %j.add3 = select i1 %lnot.i18, i32 %j, i32 %cond23.i |
| ret i32 %j.add3 |
| } |
| |
| define i32 @TryToUnfoldSelectInCurrBB(i1 %b, i1 %ui, i32 %s, i1 %x) { |
| ; CHECK-LABEL: @TryToUnfoldSelectInCurrBB( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br i1 [[B:%.*]], label [[IF_END_THREAD:%.*]], label [[IF_END:%.*]] |
| ; CHECK: if.end: |
| ; CHECK-NEXT: [[COND_FR:%.*]] = freeze i1 [[X:%.*]] |
| ; CHECK-NEXT: br i1 [[COND_FR]], label [[TMP0:%.*]], label [[IF_END_THREAD]] |
| ; CHECK: 0: |
| ; CHECK-NEXT: br label [[IF_END_THREAD]] |
| ; CHECK: if.end.thread: |
| ; CHECK-NEXT: [[TMP1:%.*]] = phi i32 [ [[S:%.*]], [[TMP0]] ], [ 42, [[IF_END]] ], [ 42, [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: ret i32 [[TMP1]] |
| ; |
| entry: |
| br i1 %b, label %if.end, label %if.else |
| |
| if.else: |
| br label %if.end |
| |
| if.end: |
| %v = phi i1 [ %x, %if.else ], [ false, %entry ] |
| %v1 = select i1 %v, i32 %s, i32 42 |
| ret i32 %v1 |
| } |