| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -basic-aa -gvn -S | FileCheck %s |
| |
| @a = external global i32 ; <i32*> [#uses=7] |
| |
| define i32 @test1() nounwind { |
| ; CHECK-LABEL: @test1( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* @a, align 4 |
| ; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i32 [[TMP0]], 4 |
| ; CHECK-NEXT: br i1 [[TMP1]], label [[BB:%.*]], label [[BB1:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: br label [[BB8:%.*]] |
| ; CHECK: bb1: |
| ; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP0]], 5 |
| ; CHECK-NEXT: br i1 [[TMP2]], label [[BB2:%.*]], label [[BB3:%.*]] |
| ; CHECK: bb2: |
| ; CHECK-NEXT: br label [[BB8]] |
| ; CHECK: bb3: |
| ; CHECK-NEXT: br i1 false, label [[BB4:%.*]], label [[BB5:%.*]] |
| ; CHECK: bb4: |
| ; CHECK-NEXT: [[TMP3:%.*]] = load i32, i32* @a, align 4 |
| ; CHECK-NEXT: [[TMP4:%.*]] = add i32 [[TMP3]], 5 |
| ; CHECK-NEXT: br label [[BB8]] |
| ; CHECK: bb5: |
| ; CHECK-NEXT: br i1 false, label [[BB6:%.*]], label [[BB7:%.*]] |
| ; CHECK: bb6: |
| ; CHECK-NEXT: [[TMP5:%.*]] = load i32, i32* @a, align 4 |
| ; CHECK-NEXT: [[TMP6:%.*]] = add i32 [[TMP5]], 4 |
| ; CHECK-NEXT: br label [[BB8]] |
| ; CHECK: bb7: |
| ; CHECK-NEXT: br label [[BB8]] |
| ; CHECK: bb8: |
| ; CHECK-NEXT: [[DOT0:%.*]] = phi i32 [ [[TMP0]], [[BB7]] ], [ undef, [[BB6]] ], [ undef, [[BB4]] ], [ 4, [[BB2]] ], [ 5, [[BB]] ] |
| ; CHECK-NEXT: ret i32 [[DOT0]] |
| ; |
| entry: |
| %0 = load i32, i32* @a, align 4 |
| %1 = icmp eq i32 %0, 4 |
| br i1 %1, label %bb, label %bb1 |
| |
| bb: ; preds = %entry |
| br label %bb8 |
| |
| bb1: ; preds = %entry |
| %2 = load i32, i32* @a, align 4 |
| %3 = icmp eq i32 %2, 5 |
| br i1 %3, label %bb2, label %bb3 |
| |
| bb2: ; preds = %bb1 |
| br label %bb8 |
| |
| bb3: ; preds = %bb1 |
| %4 = load i32, i32* @a, align 4 |
| %5 = icmp eq i32 %4, 4 |
| br i1 %5, label %bb4, label %bb5 |
| |
| bb4: ; preds = %bb3 |
| %6 = load i32, i32* @a, align 4 |
| %7 = add i32 %6, 5 |
| br label %bb8 |
| |
| bb5: ; preds = %bb3 |
| %8 = load i32, i32* @a, align 4 |
| %9 = icmp eq i32 %8, 5 |
| br i1 %9, label %bb6, label %bb7 |
| |
| bb6: ; preds = %bb5 |
| %10 = load i32, i32* @a, align 4 |
| %11 = add i32 %10, 4 |
| br label %bb8 |
| |
| bb7: ; preds = %bb5 |
| %12 = load i32, i32* @a, align 4 |
| br label %bb8 |
| |
| bb8: ; preds = %bb7, %bb6, %bb4, %bb2, %bb |
| %.0 = phi i32 [ %12, %bb7 ], [ %11, %bb6 ], [ %7, %bb4 ], [ 4, %bb2 ], [ 5, %bb ] |
| br label %return |
| |
| return: ; preds = %bb8 |
| ret i32 %.0 |
| } |
| |
| declare void @foo(i1) |
| declare void @bar(i32) |
| |
| define void @test3(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test3( |
| ; CHECK-NEXT: [[XZ:%.*]] = icmp eq i32 [[X:%.*]], 0 |
| ; CHECK-NEXT: [[YZ:%.*]] = icmp eq i32 [[Y:%.*]], 0 |
| ; CHECK-NEXT: [[Z:%.*]] = and i1 [[XZ]], [[YZ]] |
| ; CHECK-NEXT: br i1 [[Z]], label [[BOTH_ZERO:%.*]], label [[NOPE:%.*]] |
| ; CHECK: both_zero: |
| ; CHECK-NEXT: call void @foo(i1 true) |
| ; CHECK-NEXT: call void @foo(i1 true) |
| ; CHECK-NEXT: call void @bar(i32 0) |
| ; CHECK-NEXT: call void @bar(i32 0) |
| ; CHECK-NEXT: ret void |
| ; CHECK: nope: |
| ; CHECK-NEXT: call void @foo(i1 false) |
| ; CHECK-NEXT: ret void |
| ; |
| %xz = icmp eq i32 %x, 0 |
| %yz = icmp eq i32 %y, 0 |
| %z = and i1 %xz, %yz |
| br i1 %z, label %both_zero, label %nope |
| both_zero: |
| call void @foo(i1 %xz) |
| call void @foo(i1 %yz) |
| call void @bar(i32 %x) |
| call void @bar(i32 %y) |
| ret void |
| nope: |
| call void @foo(i1 %z) |
| ret void |
| } |
| |
| define void @test3_select(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test3_select( |
| ; CHECK-NEXT: [[XZ:%.*]] = icmp eq i32 [[X:%.*]], 0 |
| ; CHECK-NEXT: [[YZ:%.*]] = icmp eq i32 [[Y:%.*]], 0 |
| ; CHECK-NEXT: [[Z:%.*]] = select i1 [[XZ]], i1 [[YZ]], i1 false |
| ; CHECK-NEXT: br i1 [[Z]], label [[BOTH_ZERO:%.*]], label [[NOPE:%.*]] |
| ; CHECK: both_zero: |
| ; CHECK-NEXT: call void @foo(i1 true) |
| ; CHECK-NEXT: call void @foo(i1 true) |
| ; CHECK-NEXT: call void @bar(i32 0) |
| ; CHECK-NEXT: call void @bar(i32 0) |
| ; CHECK-NEXT: ret void |
| ; CHECK: nope: |
| ; CHECK-NEXT: call void @foo(i1 false) |
| ; CHECK-NEXT: ret void |
| ; |
| %xz = icmp eq i32 %x, 0 |
| %yz = icmp eq i32 %y, 0 |
| %z = select i1 %xz, i1 %yz, i1 false |
| br i1 %z, label %both_zero, label %nope |
| both_zero: |
| call void @foo(i1 %xz) |
| call void @foo(i1 %yz) |
| call void @bar(i32 %x) |
| call void @bar(i32 %y) |
| ret void |
| nope: |
| call void @foo(i1 %z) |
| ret void |
| } |
| |
| define void @test3_or(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test3_or( |
| ; CHECK-NEXT: [[XZ:%.*]] = icmp ne i32 [[X:%.*]], 0 |
| ; CHECK-NEXT: [[YZ:%.*]] = icmp ne i32 [[Y:%.*]], 0 |
| ; CHECK-NEXT: [[Z:%.*]] = or i1 [[XZ]], [[YZ]] |
| ; CHECK-NEXT: br i1 [[Z]], label [[NOPE:%.*]], label [[BOTH_ZERO:%.*]] |
| ; CHECK: both_zero: |
| ; CHECK-NEXT: call void @foo(i1 false) |
| ; CHECK-NEXT: call void @foo(i1 false) |
| ; CHECK-NEXT: call void @bar(i32 0) |
| ; CHECK-NEXT: call void @bar(i32 0) |
| ; CHECK-NEXT: ret void |
| ; CHECK: nope: |
| ; CHECK-NEXT: call void @foo(i1 true) |
| ; CHECK-NEXT: ret void |
| ; |
| %xz = icmp ne i32 %x, 0 |
| %yz = icmp ne i32 %y, 0 |
| %z = or i1 %xz, %yz |
| br i1 %z, label %nope, label %both_zero |
| both_zero: |
| call void @foo(i1 %xz) |
| call void @foo(i1 %yz) |
| call void @bar(i32 %x) |
| call void @bar(i32 %y) |
| ret void |
| nope: |
| call void @foo(i1 %z) |
| ret void |
| } |
| |
| define void @test3_or_select(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test3_or_select( |
| ; CHECK-NEXT: [[XZ:%.*]] = icmp ne i32 [[X:%.*]], 0 |
| ; CHECK-NEXT: [[YZ:%.*]] = icmp ne i32 [[Y:%.*]], 0 |
| ; CHECK-NEXT: [[Z:%.*]] = select i1 [[XZ]], i1 true, i1 [[YZ]] |
| ; CHECK-NEXT: br i1 [[Z]], label [[NOPE:%.*]], label [[BOTH_ZERO:%.*]] |
| ; CHECK: both_zero: |
| ; CHECK-NEXT: call void @foo(i1 false) |
| ; CHECK-NEXT: call void @foo(i1 false) |
| ; CHECK-NEXT: call void @bar(i32 0) |
| ; CHECK-NEXT: call void @bar(i32 0) |
| ; CHECK-NEXT: ret void |
| ; CHECK: nope: |
| ; CHECK-NEXT: call void @foo(i1 true) |
| ; CHECK-NEXT: ret void |
| ; |
| %xz = icmp ne i32 %x, 0 |
| %yz = icmp ne i32 %y, 0 |
| %z = select i1 %xz, i1 true, i1 %yz |
| br i1 %z, label %nope, label %both_zero |
| both_zero: |
| call void @foo(i1 %xz) |
| call void @foo(i1 %yz) |
| call void @bar(i32 %x) |
| call void @bar(i32 %y) |
| ret void |
| nope: |
| call void @foo(i1 %z) |
| ret void |
| } |
| |
| define void @test4(i1 %b, i32 %x) { |
| ; CHECK-LABEL: @test4( |
| ; CHECK-NEXT: br i1 [[B:%.*]], label [[SW:%.*]], label [[CASE3:%.*]] |
| ; CHECK: sw: |
| ; CHECK-NEXT: switch i32 [[X:%.*]], label [[DEFAULT:%.*]] [ |
| ; CHECK-NEXT: i32 0, label [[CASE0:%.*]] |
| ; CHECK-NEXT: i32 1, label [[CASE1:%.*]] |
| ; CHECK-NEXT: i32 2, label [[CASE0]] |
| ; CHECK-NEXT: i32 3, label [[CASE3]] |
| ; CHECK-NEXT: i32 4, label [[DEFAULT]] |
| ; CHECK-NEXT: ] |
| ; CHECK: default: |
| ; CHECK-NEXT: call void @bar(i32 [[X]]) |
| ; CHECK-NEXT: ret void |
| ; CHECK: case0: |
| ; CHECK-NEXT: call void @bar(i32 [[X]]) |
| ; CHECK-NEXT: ret void |
| ; CHECK: case1: |
| ; CHECK-NEXT: call void @bar(i32 1) |
| ; CHECK-NEXT: ret void |
| ; CHECK: case3: |
| ; CHECK-NEXT: call void @bar(i32 [[X]]) |
| ; CHECK-NEXT: ret void |
| ; |
| br i1 %b, label %sw, label %case3 |
| sw: |
| switch i32 %x, label %default [ |
| i32 0, label %case0 |
| i32 1, label %case1 |
| i32 2, label %case0 |
| i32 3, label %case3 |
| i32 4, label %default |
| ] |
| default: |
| call void @bar(i32 %x) |
| ret void |
| case0: |
| call void @bar(i32 %x) |
| ret void |
| case1: |
| call void @bar(i32 %x) |
| ret void |
| case3: |
| call void @bar(i32 %x) |
| ret void |
| } |
| |
| define i1 @test5(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test5( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[SAME:%.*]], label [[DIFFERENT:%.*]] |
| ; CHECK: same: |
| ; CHECK-NEXT: ret i1 false |
| ; CHECK: different: |
| ; CHECK-NEXT: ret i1 false |
| ; |
| %cmp = icmp eq i32 %x, %y |
| br i1 %cmp, label %same, label %different |
| |
| same: |
| %cmp2 = icmp ne i32 %x, %y |
| ret i1 %cmp2 |
| |
| different: |
| %cmp3 = icmp eq i32 %x, %y |
| ret i1 %cmp3 |
| } |
| |
| define i1 @test6(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test6( |
| ; CHECK-NEXT: [[CMP2:%.*]] = icmp ne i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X]], [[Y]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[SAME:%.*]], label [[DIFFERENT:%.*]] |
| ; CHECK: same: |
| ; CHECK-NEXT: ret i1 false |
| ; CHECK: different: |
| ; CHECK-NEXT: ret i1 false |
| ; |
| %cmp2 = icmp ne i32 %x, %y |
| %cmp = icmp eq i32 %x, %y |
| %cmp3 = icmp eq i32 %x, %y |
| br i1 %cmp, label %same, label %different |
| |
| same: |
| ret i1 %cmp2 |
| |
| different: |
| ret i1 %cmp3 |
| } |
| |
| define i1 @test6_fp(float %x, float %y) { |
| ; CHECK-LABEL: @test6_fp( |
| ; CHECK-NEXT: [[CMP2:%.*]] = fcmp une float [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[X]], [[Y]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[SAME:%.*]], label [[DIFFERENT:%.*]] |
| ; CHECK: same: |
| ; CHECK-NEXT: ret i1 false |
| ; CHECK: different: |
| ; CHECK-NEXT: ret i1 false |
| ; |
| %cmp2 = fcmp une float %x, %y |
| %cmp = fcmp oeq float %x, %y |
| %cmp3 = fcmp oeq float %x, %y |
| br i1 %cmp, label %same, label %different |
| |
| same: |
| ret i1 %cmp2 |
| |
| different: |
| ret i1 %cmp3 |
| } |
| |
| define i1 @test7(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test7( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[SAME:%.*]], label [[DIFFERENT:%.*]] |
| ; CHECK: same: |
| ; CHECK-NEXT: ret i1 false |
| ; CHECK: different: |
| ; CHECK-NEXT: ret i1 false |
| ; |
| %cmp = icmp sgt i32 %x, %y |
| br i1 %cmp, label %same, label %different |
| |
| same: |
| %cmp2 = icmp sle i32 %x, %y |
| ret i1 %cmp2 |
| |
| different: |
| %cmp3 = icmp sgt i32 %x, %y |
| ret i1 %cmp3 |
| } |
| |
| define i1 @test7_fp(float %x, float %y) { |
| ; CHECK-LABEL: @test7_fp( |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp ogt float [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[SAME:%.*]], label [[DIFFERENT:%.*]] |
| ; CHECK: same: |
| ; CHECK-NEXT: ret i1 false |
| ; CHECK: different: |
| ; CHECK-NEXT: ret i1 false |
| ; |
| %cmp = fcmp ogt float %x, %y |
| br i1 %cmp, label %same, label %different |
| |
| same: |
| %cmp2 = fcmp ule float %x, %y |
| ret i1 %cmp2 |
| |
| different: |
| %cmp3 = fcmp ogt float %x, %y |
| ret i1 %cmp3 |
| } |
| |
| define i1 @test8(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @test8( |
| ; CHECK-NEXT: [[CMP2:%.*]] = icmp sle i32 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[X]], [[Y]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[SAME:%.*]], label [[DIFFERENT:%.*]] |
| ; CHECK: same: |
| ; CHECK-NEXT: ret i1 false |
| ; CHECK: different: |
| ; CHECK-NEXT: ret i1 false |
| ; |
| %cmp2 = icmp sle i32 %x, %y |
| %cmp = icmp sgt i32 %x, %y |
| %cmp3 = icmp sgt i32 %x, %y |
| br i1 %cmp, label %same, label %different |
| |
| same: |
| ret i1 %cmp2 |
| |
| different: |
| ret i1 %cmp3 |
| } |
| |
| define i1 @test8_fp(float %x, float %y) { |
| ; CHECK-LABEL: @test8_fp( |
| ; CHECK-NEXT: [[CMP2:%.*]] = fcmp ule float [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp ogt float [[X]], [[Y]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[SAME:%.*]], label [[DIFFERENT:%.*]] |
| ; CHECK: same: |
| ; CHECK-NEXT: ret i1 false |
| ; CHECK: different: |
| ; CHECK-NEXT: ret i1 false |
| ; |
| %cmp2 = fcmp ule float %x, %y |
| %cmp = fcmp ogt float %x, %y |
| %cmp3 = fcmp ogt float %x, %y |
| br i1 %cmp, label %same, label %different |
| |
| same: |
| ret i1 %cmp2 |
| |
| different: |
| ret i1 %cmp3 |
| } |
| |
| ; PR1768 |
| define i32 @test9(i32 %i, i32 %j) { |
| ; CHECK-LABEL: @test9( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[I:%.*]], [[J:%.*]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[RET:%.*]] |
| ; CHECK: cond_true: |
| ; CHECK-NEXT: ret i32 0 |
| ; CHECK: ret: |
| ; CHECK-NEXT: ret i32 5 |
| ; |
| %cmp = icmp eq i32 %i, %j |
| br i1 %cmp, label %cond_true, label %ret |
| |
| cond_true: |
| %diff = sub i32 %i, %j |
| ret i32 %diff |
| |
| ret: |
| ret i32 5 |
| } |
| |
| ; PR1768 |
| define i32 @test10(i32 %j, i32 %i) { |
| ; CHECK-LABEL: @test10( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[I:%.*]], [[J:%.*]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[RET:%.*]] |
| ; CHECK: cond_true: |
| ; CHECK-NEXT: ret i32 0 |
| ; CHECK: ret: |
| ; CHECK-NEXT: ret i32 5 |
| ; |
| %cmp = icmp eq i32 %i, %j |
| br i1 %cmp, label %cond_true, label %ret |
| |
| cond_true: |
| %diff = sub i32 %i, %j |
| ret i32 %diff |
| |
| ret: |
| ret i32 5 |
| } |
| |
| declare i32 @yogibar() |
| |
| define i32 @test11(i32 %x) { |
| ; CHECK-LABEL: @test11( |
| ; CHECK-NEXT: [[V0:%.*]] = call i32 @yogibar() |
| ; CHECK-NEXT: [[V1:%.*]] = call i32 @yogibar() |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[V0]], [[V1]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[NEXT:%.*]] |
| ; CHECK: cond_true: |
| ; CHECK-NEXT: ret i32 [[V0]] |
| ; CHECK: next: |
| ; CHECK-NEXT: [[CMP2:%.*]] = icmp eq i32 [[X:%.*]], [[V0]] |
| ; CHECK-NEXT: br i1 [[CMP2]], label [[COND_TRUE2:%.*]], label [[NEXT2:%.*]] |
| ; CHECK: cond_true2: |
| ; CHECK-NEXT: ret i32 [[X]] |
| ; CHECK: next2: |
| ; CHECK-NEXT: ret i32 0 |
| ; |
| %v0 = call i32 @yogibar() |
| %v1 = call i32 @yogibar() |
| %cmp = icmp eq i32 %v0, %v1 |
| br i1 %cmp, label %cond_true, label %next |
| |
| cond_true: |
| ret i32 %v1 |
| |
| next: |
| %cmp2 = icmp eq i32 %x, %v0 |
| br i1 %cmp2, label %cond_true2, label %next2 |
| |
| cond_true2: |
| ret i32 %v0 |
| |
| next2: |
| ret i32 0 |
| } |
| |
| define i32 @test12(i32 %x) { |
| ; CHECK-LABEL: @test12( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[COND_FALSE:%.*]] |
| ; CHECK: cond_true: |
| ; CHECK-NEXT: br label [[RET:%.*]] |
| ; CHECK: cond_false: |
| ; CHECK-NEXT: br label [[RET]] |
| ; CHECK: ret: |
| ; CHECK-NEXT: [[RES:%.*]] = phi i32 [ 0, [[COND_TRUE]] ], [ [[X]], [[COND_FALSE]] ] |
| ; CHECK-NEXT: ret i32 [[RES]] |
| ; |
| %cmp = icmp eq i32 %x, 0 |
| br i1 %cmp, label %cond_true, label %cond_false |
| |
| cond_true: |
| br label %ret |
| |
| cond_false: |
| br label %ret |
| |
| ret: |
| %res = phi i32 [ %x, %cond_true ], [ %x, %cond_false ] |
| ret i32 %res |
| } |
| |
| ; On the path from entry->if->end we know that ptr1==ptr2, so we can determine |
| ; that gep2 does not alias ptr1 on that path (as it would require that |
| ; ptr2==ptr2+2), so we can perform PRE of the load. |
| define i32 @test13(i32* %ptr1, i32* %ptr2) { |
| ; CHECK-LABEL: @test13( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[GEP1:%.*]] = getelementptr i32, i32* [[PTR2:%.*]], i32 1 |
| ; CHECK-NEXT: [[GEP2:%.*]] = getelementptr i32, i32* [[PTR2]], i32 2 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32* [[PTR1:%.*]], [[PTR2]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[IF:%.*]], label [[ENTRY_END_CRIT_EDGE:%.*]] |
| ; CHECK: entry.end_crit_edge: |
| ; CHECK-NEXT: [[VAL2_PRE:%.*]] = load i32, i32* [[GEP2]], align 4 |
| ; CHECK-NEXT: br label [[END:%.*]] |
| ; CHECK: if: |
| ; CHECK-NEXT: [[VAL1:%.*]] = load i32, i32* [[GEP2]], align 4 |
| ; CHECK-NEXT: br label [[END]] |
| ; CHECK: end: |
| ; CHECK-NEXT: [[VAL2:%.*]] = phi i32 [ [[VAL1]], [[IF]] ], [ [[VAL2_PRE]], [[ENTRY_END_CRIT_EDGE]] ] |
| ; CHECK-NEXT: [[PHI1:%.*]] = phi i32* [ [[PTR2]], [[IF]] ], [ [[GEP1]], [[ENTRY_END_CRIT_EDGE]] ] |
| ; CHECK-NEXT: [[PHI2:%.*]] = phi i32 [ [[VAL1]], [[IF]] ], [ 0, [[ENTRY_END_CRIT_EDGE]] ] |
| ; CHECK-NEXT: store i32 0, i32* [[PHI1]], align 4 |
| ; CHECK-NEXT: [[RET:%.*]] = add i32 [[PHI2]], [[VAL2]] |
| ; CHECK-NEXT: ret i32 [[RET]] |
| ; |
| entry: |
| %gep1 = getelementptr i32, i32* %ptr2, i32 1 |
| %gep2 = getelementptr i32, i32* %ptr2, i32 2 |
| %cmp = icmp eq i32* %ptr1, %ptr2 |
| br i1 %cmp, label %if, label %end |
| |
| |
| if: |
| %val1 = load i32, i32* %gep2, align 4 |
| br label %end |
| |
| end: |
| %phi1 = phi i32* [ %ptr1, %if ], [ %gep1, %entry ] |
| %phi2 = phi i32 [ %val1, %if ], [ 0, %entry ] |
| store i32 0, i32* %phi1, align 4 |
| %val2 = load i32, i32* %gep2, align 4 |
| %ret = add i32 %phi2, %val2 |
| ret i32 %ret |
| } |
| |
| define void @test14(i32* %ptr1, i32* noalias %ptr2) { |
| ; CHECK-LABEL: @test14( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds i32, i32* [[PTR1:%.*]], i32 1 |
| ; CHECK-NEXT: [[GEP2:%.*]] = getelementptr inbounds i32, i32* [[PTR1]], i32 2 |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: br i1 undef, label [[LOOP_IF1_CRIT_EDGE:%.*]], label [[THEN:%.*]] |
| ; CHECK: loop.if1_crit_edge: |
| ; CHECK-NEXT: [[VAL2_PRE:%.*]] = load i32, i32* [[GEP2]], align 4 |
| ; CHECK-NEXT: br label [[IF1:%.*]] |
| ; CHECK: if1: |
| ; CHECK-NEXT: [[VAL2:%.*]] = phi i32 [ [[VAL2_PRE]], [[LOOP_IF1_CRIT_EDGE]] ], [ [[VAL3:%.*]], [[LOOP_END:%.*]] ] |
| ; CHECK-NEXT: store i32 [[VAL2]], i32* [[GEP2]], align 4 |
| ; CHECK-NEXT: store i32 0, i32* [[GEP1]], align 4 |
| ; CHECK-NEXT: br label [[THEN]] |
| ; CHECK: then: |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32* [[GEP2]], [[PTR2:%.*]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_END]], label [[IF2:%.*]] |
| ; CHECK: if2: |
| ; CHECK-NEXT: br label [[LOOP_END]] |
| ; CHECK: loop.end: |
| ; CHECK-NEXT: [[PHI3:%.*]] = phi i32* [ [[PTR2]], [[THEN]] ], [ [[PTR1]], [[IF2]] ] |
| ; CHECK-NEXT: [[VAL3]] = load i32, i32* [[GEP2]], align 4 |
| ; CHECK-NEXT: store i32 [[VAL3]], i32* [[PHI3]], align 4 |
| ; CHECK-NEXT: br i1 undef, label [[LOOP]], label [[IF1]] |
| ; |
| entry: |
| %gep1 = getelementptr inbounds i32, i32* %ptr1, i32 1 |
| %gep2 = getelementptr inbounds i32, i32* %ptr1, i32 2 |
| br label %loop |
| |
| loop: |
| %phi1 = phi i32* [ %gep3, %loop.end ], [ %gep1, %entry ] |
| br i1 undef, label %if1, label %then |
| |
| |
| if1: |
| %val2 = load i32, i32* %gep2, align 4 |
| store i32 %val2, i32* %gep2, align 4 |
| store i32 0, i32* %phi1, align 4 |
| br label %then |
| |
| then: |
| %cmp = icmp eq i32* %gep2, %ptr2 |
| br i1 %cmp, label %loop.end, label %if2 |
| |
| if2: |
| br label %loop.end |
| |
| loop.end: |
| %phi3 = phi i32* [ %gep2, %then ], [ %ptr1, %if2 ] |
| %val3 = load i32, i32* %gep2, align 4 |
| store i32 %val3, i32* %phi3, align 4 |
| %gep3 = getelementptr inbounds i32, i32* %ptr1, i32 1 |
| br i1 undef, label %loop, label %if1 |
| } |