| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -S -mergeicmps -verify-dom-info | FileCheck %s |
| target triple = "x86_64" |
| |
| %Triple = type { i32, i32, i32, i32 } |
| |
| @g = external global i32 |
| |
| ; bb1 references a gep introduced in bb0. The gep must remain available after |
| ; the merge. |
| define i1 @bug(%Triple* nonnull dereferenceable(16) %lhs, %Triple* nonnull dereferenceable(16) %rhs) { |
| ; CHECK-LABEL: @bug( |
| ; CHECK-NEXT: bb0: |
| ; CHECK-NEXT: store i32 1, i32* @g, align 4 |
| ; CHECK-NEXT: [[GEP:%.*]] = getelementptr [[TRIPLE:%.*]], %Triple* [[RHS:%.*]], i64 0, i32 0 |
| ; CHECK-NEXT: [[L0_ADDR:%.*]] = getelementptr inbounds [[TRIPLE]], %Triple* [[LHS:%.*]], i64 0, i32 0 |
| ; CHECK-NEXT: [[L0:%.*]] = load i32, i32* [[L0_ADDR]], align 4 |
| ; CHECK-NEXT: [[R0_ADDR:%.*]] = getelementptr inbounds [[TRIPLE]], %Triple* [[RHS]], i64 0, i32 0 |
| ; CHECK-NEXT: [[R0:%.*]] = load i32, i32* [[R0_ADDR]], align 4 |
| ; CHECK-NEXT: [[CMP0:%.*]] = icmp eq i32 [[L0]], [[R0]] |
| ; CHECK-NEXT: br i1 [[CMP0]], label %"bb1+bb2", label [[FINAL:%.*]] |
| ; CHECK: "bb1+bb2": |
| ; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds [[TRIPLE]], %Triple* [[LHS]], i64 0, i32 2 |
| ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, i32* [[GEP]], i64 2 |
| ; CHECK-NEXT: [[CSTR:%.*]] = bitcast i32* [[TMP0]] to i8* |
| ; CHECK-NEXT: [[CSTR1:%.*]] = bitcast i32* [[TMP1]] to i8* |
| ; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(i8* [[CSTR]], i8* [[CSTR1]], i64 8) |
| ; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[MEMCMP]], 0 |
| ; CHECK-NEXT: br label [[FINAL]] |
| ; CHECK: final: |
| ; CHECK-NEXT: [[RET:%.*]] = phi i1 [ false, [[BB0:%.*]] ], [ [[TMP2]], %"bb1+bb2" ] |
| ; CHECK-NEXT: ret i1 [[RET]] |
| ; |
| bb0: |
| store i32 1, i32* @g |
| %gep = getelementptr %Triple, %Triple* %rhs, i64 0, i32 0 |
| %l0_addr = getelementptr inbounds %Triple, %Triple* %lhs, i64 0, i32 0 |
| %l0 = load i32, i32* %l0_addr, align 4 |
| %r0_addr = getelementptr inbounds %Triple, %Triple* %rhs, i64 0, i32 0 |
| %r0 = load i32, i32* %r0_addr, align 4 |
| %cmp0 = icmp eq i32 %l0, %r0 |
| br i1 %cmp0, label %bb1, label %final |
| |
| bb1: ; preds = %bb0 |
| %l1_addr = getelementptr inbounds %Triple, %Triple* %lhs, i64 0, i32 2 |
| %l1 = load i32, i32* %l1_addr, align 4 |
| %r1_addr = getelementptr inbounds i32, i32* %gep, i64 2 |
| %r1 = load i32, i32* %r1_addr, align 4 |
| %cmp1 = icmp eq i32 %l1, %r1 |
| br i1 %cmp1, label %bb2, label %final |
| |
| bb2: ; preds = %bb1 |
| %l2_addr = getelementptr inbounds %Triple, %Triple* %lhs, i64 0, i32 3 |
| %l2 = load i32, i32* %l2_addr, align 4 |
| %r2_addr = getelementptr inbounds i32, i32* %gep, i64 3 |
| %r2 = load i32, i32* %r2_addr, align 4 |
| %cmp2 = icmp eq i32 %l2, %r2 |
| br label %final |
| |
| final: ; preds = %bb2, %bb1, %bb0 |
| %ret = phi i1 [ false, %bb0 ], [ false, %bb1 ], [ %cmp2, %bb2 ] |
| ret i1 %ret |
| } |
| |