| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -dse -S %s | FileCheck %s |
| |
| @b = local_unnamed_addr global i32 0, align 4 |
| |
| ; Reduced test case for PR47285. |
| |
| ; `store i32 9, i32* @b` in %interesting is not killed by `store i32 23, i32* @b` |
| ; in %killer, because it is not overwritten before reaching the end of the |
| ; function via %bb.2 -> %no.overwrite.exit. |
| |
| define void @test(i1 %c.0, i1 %c.2, i1 %c.3, i1 %c.4, i1 %c.5, i1 %c.6) { |
| ; CHECK-LABEL: @test( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[BB_2:%.*]] |
| ; CHECK: bb.2: |
| ; CHECK-NEXT: br i1 [[C_0:%.*]], label [[BB_3:%.*]], label [[NO_OVERWRITE_EXIT:%.*]] |
| ; CHECK: no.overwrite.exit: |
| ; CHECK-NEXT: ret void |
| ; CHECK: bb.3: |
| ; CHECK-NEXT: br i1 [[C_2:%.*]], label [[BB_4:%.*]], label [[BB_7:%.*]] |
| ; CHECK: bb.4: |
| ; CHECK-NEXT: br i1 [[C_4:%.*]], label [[BB_5:%.*]], label [[BB_6:%.*]] |
| ; CHECK: bb.5: |
| ; CHECK-NEXT: store i32 99, i32* @b, align 4 |
| ; CHECK-NEXT: br i1 [[C_3:%.*]], label [[BB_5]], label [[BB_2]] |
| ; CHECK: bb.6: |
| ; CHECK-NEXT: store i32 91, i32* @b, align 4 |
| ; CHECK-NEXT: br i1 [[C_5:%.*]], label [[SPLIT_CRIT_EDGE_2:%.*]], label [[BB_2]] |
| ; CHECK: split_crit_edge.2: |
| ; CHECK-NEXT: store i32 27, i32* @b, align 4 |
| ; CHECK-NEXT: br label [[EXIT:%.*]] |
| ; CHECK: bb.7: |
| ; CHECK-NEXT: br i1 [[C_4]], label [[INTERESTING:%.*]], label [[BB_8:%.*]] |
| ; CHECK: interesting: |
| ; CHECK-NEXT: store i32 9, i32* @b, align 4 |
| ; CHECK-NEXT: br i1 [[C_6:%.*]], label [[KILLER:%.*]], label [[BB_2]] |
| ; CHECK: killer: |
| ; CHECK-NEXT: store i32 23, i32* @b, align 4 |
| ; CHECK-NEXT: ret void |
| ; CHECK: bb.8: |
| ; CHECK-NEXT: store i32 19, i32* @b, align 4 |
| ; CHECK-NEXT: br i1 [[C_4]], label [[EXIT]], label [[BB_2]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %bb.2 |
| |
| bb.2: ; preds = %bb.8, %interesting, %bb.6, %bb.5, %entry |
| br i1 %c.0, label %bb.3, label %no.overwrite.exit |
| |
| no.overwrite.exit: ; preds = %bb.2 |
| ret void |
| |
| bb.3: ; preds = %bb.2 |
| br i1 %c.2, label %bb.4, label %bb.7 |
| |
| bb.4: ; preds = %bb.3 |
| br i1 %c.4, label %bb.5, label %bb.6 |
| |
| bb.5: ; preds = %bb.5, %bb.4 |
| store i32 99, i32* @b, align 4 |
| br i1 %c.3, label %bb.5, label %bb.2 |
| |
| bb.6: ; preds = %bb.4 |
| store i32 91, i32* @b, align 4 |
| br i1 %c.5, label %split_crit_edge.2, label %bb.2 |
| |
| split_crit_edge.2: ; preds = %bb.6 |
| store i32 27, i32* @b, align 4 |
| br label %exit |
| |
| bb.7: ; preds = %bb.3 |
| br i1 %c.4, label %interesting, label %bb.8 |
| |
| interesting: ; preds = %bb.7 |
| store i32 9, i32* @b, align 4 |
| br i1 %c.6, label %killer, label %bb.2 |
| |
| killer: ; preds = %interesting |
| store i32 23, i32* @b, align 4 |
| ret void |
| |
| bb.8: ; preds = %bb.7 |
| store i32 19, i32* @b, align 4 |
| br i1 %c.4, label %exit, label %bb.2 |
| |
| exit: ; preds = %bb.8, %split_crit_edge.2 |
| ret void |
| } |