1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; This test check if redundant truncate for eq/ne cmp is skipped during code gen. 3;RUN: llc -mtriple=thumbv7-eabi < %s | FileCheck %s 4 5define void @test_zero(i16 signext %x) optsize { 6; CHECK-LABEL: test_zero: 7; CHECK: @ %bb.0: @ %entry 8; CHECK-NEXT: cbz r0, .LBB0_2 9; CHECK-NEXT: @ %bb.1: @ %if.then 10; CHECK-NEXT: b foo1 11; CHECK-NEXT: .LBB0_2: @ %if.else 12; CHECK-NEXT: b foo2 13entry: 14 %tobool = icmp eq i16 %x, 0 15 br i1 %tobool, label %if.else, label %if.then 16if.then: ; preds = %entry 17 tail call void @foo1() 18 br label %if.end 19 20if.else: ; preds = %entry 21 tail call void @foo2() 22 br label %if.end 23 24if.end: ; preds = %if.else, %if.then 25 ret void 26} 27 28define void @test_i8_nonzero(i18 signext %x) optsize { 29; CHECK-LABEL: test_i8_nonzero: 30; CHECK: @ %bb.0: @ %entry 31; CHECK-NEXT: cmp r0, #150 32; CHECK-NEXT: it eq 33; CHECK-NEXT: beq foo2 34; CHECK-NEXT: .LBB1_1: @ %if.then 35; CHECK-NEXT: b foo1 36entry: 37 %tobool = icmp eq i18 %x, 150 38 br i1 %tobool, label %if.else, label %if.then 39if.then: ; preds = %entry 40 tail call void @foo1() 41 br label %if.end 42 43if.else: ; preds = %entry 44 tail call void @foo2() 45 br label %if.end 46 47if.end: ; preds = %if.else, %if.then 48 ret void 49} 50 51define void @test_i8_i16(i8 signext %x) optsize { 52; CHECK-LABEL: test_i8_i16: 53; CHECK: @ %bb.0: @ %entry 54; CHECK-NEXT: cmp.w r0, #300 55; CHECK-NEXT: it eq 56; CHECK-NEXT: beq foo2 57; CHECK-NEXT: .LBB2_1: @ %if.then 58; CHECK-NEXT: b foo1 59entry: 60 %x16 = sext i8 %x to i16 61 %tobool = icmp eq i16 %x16, 300 62 br i1 %tobool, label %if.else, label %if.then 63if.then: ; preds = %entry 64 tail call void @foo1() 65 br label %if.end 66 67if.else: ; preds = %entry 68 tail call void @foo2() 69 br label %if.end 70 71if.end: ; preds = %if.else, %if.then 72 ret void 73} 74 75define void @test_i16_i8(i16 signext %x) optsize { 76; CHECK-LABEL: test_i16_i8: 77; CHECK: @ %bb.0: @ %entry 78; CHECK-NEXT: uxtb r0, r0 79; CHECK-NEXT: cmp r0, #128 80; CHECK-NEXT: it eq 81; CHECK-NEXT: beq foo2 82; CHECK-NEXT: .LBB3_1: @ %if.then 83; CHECK-NEXT: b foo1 84entry: 85 %x8 = trunc i16 %x to i8 86 %tobool = icmp eq i8 %x8, 128 87 br i1 %tobool, label %if.else, label %if.then 88if.then: ; preds = %entry 89 tail call void @foo1() 90 br label %if.end 91 92if.else: ; preds = %entry 93 tail call void @foo2() 94 br label %if.end 95 96if.end: ; preds = %if.else, %if.then 97 ret void 98} 99 100define void @test_zext_zero(i16 zeroext %x) optsize { 101; CHECK-LABEL: test_zext_zero: 102; CHECK: @ %bb.0: @ %entry 103; CHECK-NEXT: cbz r0, .LBB4_2 104; CHECK-NEXT: @ %bb.1: @ %if.then 105; CHECK-NEXT: b foo1 106; CHECK-NEXT: .LBB4_2: @ %if.else 107; CHECK-NEXT: b foo2 108entry: 109 %tobool = icmp eq i16 %x, 0 110 br i1 %tobool, label %if.else, label %if.then 111if.then: ; preds = %entry 112 tail call void @foo1() 113 br label %if.end 114 115if.else: ; preds = %entry 116 tail call void @foo2() 117 br label %if.end 118 119if.end: ; preds = %if.else, %if.then 120 ret void 121} 122 123declare void @foo1(...) 124declare void @foo2(...) 125