113 lines · plain
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; REQUIRES: asserts3 4; RUN: opt < %s -passes=instcombine --debug-counter=assume-queries-counter=0 -S | FileCheck %s --check-prefixes=COUNTER15; RUN: opt < %s -passes=instcombine --debug-counter=assume-queries-counter=1-2 -S | FileCheck %s --check-prefixes=COUNTER26; RUN: opt < %s -passes=instcombine --debug-counter=assume-queries-counter=2-6 -S | FileCheck %s --check-prefixes=COUNTER37 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 false15;16; COUNTER2-LABEL: @test1(17; COUNTER2-NEXT: call void @llvm.assume(i1 true) [ "nonnull"(ptr [[TMP0:%.*]]) ]18; COUNTER2-NEXT: [[TMP2:%.*]] = icmp eq ptr [[TMP0]], null19; 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]], null24; COUNTER3-NEXT: ret i1 [[TMP2]]25;26 call void @llvm.assume(i1 true) ["nonnull"(ptr %0)]27 %2 = icmp eq ptr %0, null28 ret i1 %229}30 31define dso_local i1 @test2(ptr readonly %0) {32; COUNTER1-LABEL: @test2(33; COUNTER1-NEXT: [[TMP2:%.*]] = icmp eq ptr [[TMP0:%.*]], null34; 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 false40;41; COUNTER3-LABEL: @test2(42; COUNTER3-NEXT: call void @llvm.assume(i1 true) [ "nonnull"(ptr [[TMP0:%.*]]) ]43; COUNTER3-NEXT: ret i1 false44;45 %2 = icmp eq ptr %0, null46 call void @llvm.assume(i1 true) ["nonnull"(ptr %0)]47 ret i1 %248}49 50define dso_local i32 @test4(ptr readonly %0, i1 %cond) nofree nosync {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]], null58; COUNTER1-NEXT: br i1 [[TMP2]], label [[TMP5:%.*]], label [[TMP3:%.*]]59; COUNTER1: 3:60; COUNTER1-NEXT: [[TMP4:%.*]] = load i32, ptr [[TMP0]], align 461; 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]], null73; COUNTER2-NEXT: br i1 [[TMP2]], label [[TMP5:%.*]], label [[TMP3:%.*]]74; COUNTER2: 3:75; COUNTER2-NEXT: [[TMP4:%.*]] = load i32, ptr [[TMP0]], align 476; 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 490; 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 %B97 98B:99 br label %A100 101A:102 %2 = icmp eq ptr %0, null103 br i1 %2, label %5, label %3104 1053: ; preds = %1106 %4 = load i32, ptr %0, align 4107 br label %5108 1095: ; preds = %1, %3110 %6 = phi i32 [ %4, %3 ], [ 0, %A ]111 ret i32 %6112}113