1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; REQUIRES: asserts 3 4; RUN: opt < %s -passes=instcombine --debug-counter=assume-queries-counter=0 -S | FileCheck %s --check-prefixes=COUNTER1 5; RUN: opt < %s -passes=instcombine --debug-counter=assume-queries-counter=1-2 -S | FileCheck %s --check-prefixes=COUNTER2 6; RUN: opt < %s -passes=instcombine --debug-counter=assume-queries-counter=2-6 -S | FileCheck %s --check-prefixes=COUNTER3 7 8declare i1 @get_val() 9declare void @llvm.assume(i1) 10 11define dso_local i1 @test1(ptr readonly %0) { 12; COUNTER1-LABEL: @test1( 13; COUNTER1-NEXT: call void @llvm.assume(i1 true) [ "nonnull"(ptr [[TMP0:%.*]]) ] 14; COUNTER1-NEXT: ret i1 false 15; 16; COUNTER2-LABEL: @test1( 17; COUNTER2-NEXT: call void @llvm.assume(i1 true) [ "nonnull"(ptr [[TMP0:%.*]]) ] 18; COUNTER2-NEXT: [[TMP2:%.*]] = icmp eq ptr [[TMP0]], null 19; COUNTER2-NEXT: ret i1 [[TMP2]] 20; 21; COUNTER3-LABEL: @test1( 22; COUNTER3-NEXT: call void @llvm.assume(i1 true) [ "nonnull"(ptr [[TMP0:%.*]]) ] 23; COUNTER3-NEXT: [[TMP2:%.*]] = icmp eq ptr [[TMP0]], null 24; COUNTER3-NEXT: ret i1 [[TMP2]] 25; 26 call void @llvm.assume(i1 true) ["nonnull"(ptr %0)] 27 %2 = icmp eq ptr %0, null 28 ret i1 %2 29} 30 31define dso_local i1 @test2(ptr readonly %0) { 32; COUNTER1-LABEL: @test2( 33; COUNTER1-NEXT: [[TMP2:%.*]] = icmp eq ptr [[TMP0:%.*]], null 34; COUNTER1-NEXT: call void @llvm.assume(i1 true) [ "nonnull"(ptr [[TMP0]]) ] 35; COUNTER1-NEXT: ret i1 [[TMP2]] 36; 37; COUNTER2-LABEL: @test2( 38; COUNTER2-NEXT: call void @llvm.assume(i1 true) [ "nonnull"(ptr [[TMP0:%.*]]) ] 39; COUNTER2-NEXT: ret i1 false 40; 41; COUNTER3-LABEL: @test2( 42; COUNTER3-NEXT: call void @llvm.assume(i1 true) [ "nonnull"(ptr [[TMP0:%.*]]) ] 43; COUNTER3-NEXT: ret i1 false 44; 45 %2 = icmp eq ptr %0, null 46 call void @llvm.assume(i1 true) ["nonnull"(ptr %0)] 47 ret i1 %2 48} 49 50define dso_local i32 @test4(ptr readonly %0, i1 %cond) { 51; COUNTER1-LABEL: @test4( 52; COUNTER1-NEXT: call void @llvm.assume(i1 true) [ "dereferenceable"(ptr [[TMP0:%.*]], i32 4) ] 53; COUNTER1-NEXT: br i1 [[COND:%.*]], label [[A:%.*]], label [[B:%.*]] 54; COUNTER1: B: 55; COUNTER1-NEXT: br label [[A]] 56; COUNTER1: A: 57; COUNTER1-NEXT: [[TMP2:%.*]] = icmp eq ptr [[TMP0]], null 58; COUNTER1-NEXT: br i1 [[TMP2]], label [[TMP5:%.*]], label [[TMP3:%.*]] 59; COUNTER1: 3: 60; COUNTER1-NEXT: [[TMP4:%.*]] = load i32, ptr [[TMP0]], align 4 61; COUNTER1-NEXT: br label [[TMP5]] 62; COUNTER1: 5: 63; COUNTER1-NEXT: [[TMP6:%.*]] = phi i32 [ [[TMP4]], [[TMP3]] ], [ 0, [[A]] ] 64; COUNTER1-NEXT: ret i32 [[TMP6]] 65; 66; COUNTER2-LABEL: @test4( 67; COUNTER2-NEXT: call void @llvm.assume(i1 true) [ "dereferenceable"(ptr [[TMP0:%.*]], i32 4) ] 68; COUNTER2-NEXT: br i1 [[COND:%.*]], label [[A:%.*]], label [[B:%.*]] 69; COUNTER2: B: 70; COUNTER2-NEXT: br label [[A]] 71; COUNTER2: A: 72; COUNTER2-NEXT: [[TMP2:%.*]] = icmp eq ptr [[TMP0]], null 73; COUNTER2-NEXT: br i1 [[TMP2]], label [[TMP5:%.*]], label [[TMP3:%.*]] 74; COUNTER2: 3: 75; COUNTER2-NEXT: [[TMP4:%.*]] = load i32, ptr [[TMP0]], align 4 76; COUNTER2-NEXT: br label [[TMP5]] 77; COUNTER2: 5: 78; COUNTER2-NEXT: [[TMP6:%.*]] = phi i32 [ [[TMP4]], [[TMP3]] ], [ 0, [[A]] ] 79; COUNTER2-NEXT: ret i32 [[TMP6]] 80; 81; COUNTER3-LABEL: @test4( 82; COUNTER3-NEXT: call void @llvm.assume(i1 true) [ "dereferenceable"(ptr [[TMP0:%.*]], i32 4) ] 83; COUNTER3-NEXT: br i1 [[COND:%.*]], label [[A:%.*]], label [[B:%.*]] 84; COUNTER3: B: 85; COUNTER3-NEXT: br label [[A]] 86; COUNTER3: A: 87; COUNTER3-NEXT: br i1 false, label [[TMP4:%.*]], label [[TMP2:%.*]] 88; COUNTER3: 2: 89; COUNTER3-NEXT: [[TMP3:%.*]] = load i32, ptr [[TMP0]], align 4 90; COUNTER3-NEXT: br label [[TMP4]] 91; COUNTER3: 4: 92; COUNTER3-NEXT: [[TMP5:%.*]] = phi i32 [ [[TMP3]], [[TMP2]] ], [ poison, [[A]] ] 93; COUNTER3-NEXT: ret i32 [[TMP5]] 94; 95 call void @llvm.assume(i1 true) ["dereferenceable"(ptr %0, i32 4)] 96 br i1 %cond, label %A, label %B 97 98B: 99 br label %A 100 101A: 102 %2 = icmp eq ptr %0, null 103 br i1 %2, label %5, label %3 104 1053: ; preds = %1 106 %4 = load i32, ptr %0, align 4 107 br label %5 108 1095: ; preds = %1, %3 110 %6 = phi i32 [ %4, %3 ], [ 0, %A ] 111 ret i32 %6 112} 113