derek.holloway
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54 lines
2.3 KiB
LLVM
54 lines
2.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; REQUIRES: x86-registered-target
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; RUN: opt < %s -passes=rel-lookup-table-converter -relocation-model=pic -S | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@a = internal constant i32 0, align 4
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@b = internal constant i32 0, align 4
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@c = internal constant i32 0, align 4
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@table1 = private unnamed_addr constant [3 x ptr] [ptr @a, ptr @b, ptr @c], align 8
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@table2 = private unnamed_addr constant [3 x ptr] [ptr @a, ptr @b, ptr @c], align 8
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@table3 = private unnamed_addr constant [3 x ptr] [ptr @a, ptr @b, ptr @c], align 8
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define ptr @test(i32 %cond) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: [[RELTABLE_SHIFT:%.*]] = shl i32 [[COND:%.*]], 2
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; CHECK-NEXT: [[RELTABLE_INTRINSIC:%.*]] = call ptr @llvm.load.relative.i32(ptr @table1.rel, i32 [[RELTABLE_SHIFT]])
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; CHECK-NEXT: ret ptr [[RELTABLE_INTRINSIC]]
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;
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%switch.gep = getelementptr inbounds [3 x ptr], ptr @table1, i32 0, i32 %cond
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%switch.load = load ptr, ptr %switch.gep, align 8
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ret ptr %switch.load
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}
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define i32 @test_different_load_type(i32 %cond) {
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; CHECK-LABEL: @test_different_load_type(
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; CHECK-NEXT: [[SWITCH_GEP:%.*]] = getelementptr inbounds [3 x ptr], ptr @table2, i32 0, i32 [[COND:%.*]]
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; CHECK-NEXT: [[SWITCH_LOAD:%.*]] = load i32, ptr [[SWITCH_GEP]], align 8
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; CHECK-NEXT: ret i32 [[SWITCH_LOAD]]
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;
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%switch.gep = getelementptr inbounds [3 x ptr], ptr @table2, i32 0, i32 %cond
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%switch.load = load i32, ptr %switch.gep, align 8
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ret i32 %switch.load
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}
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define i8 @test_different_gep_type(i32 %cond) {
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; CHECK-LABEL: @test_different_gep_type(
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; CHECK-NEXT: [[SWITCH_GEP:%.*]] = getelementptr inbounds [3 x i8], ptr @table3, i32 0, i32 [[COND:%.*]]
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; CHECK-NEXT: [[SWITCH_LOAD:%.*]] = load i8, ptr [[SWITCH_GEP]], align 8
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; CHECK-NEXT: ret i8 [[SWITCH_LOAD]]
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;
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%switch.gep = getelementptr inbounds [3 x i8], ptr @table3, i32 0, i32 %cond
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%switch.load = load i8, ptr %switch.gep, align 8
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ret i8 %switch.load
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}
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!llvm.module.flags = !{!0, !1}
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!0 = !{i32 7, !"PIC Level", i32 2}
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!1 = !{i32 1, !"Code Model", i32 1}
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!4 = !{!"any pointer", !5, i64 0}
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!5 = !{!"omnipotent char", !6, i64 0}
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!6 = !{!"Simple C/C++ TBAA"}
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