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TheRock/compiler/amd-llvm/llvm/test/Transforms/SimplifyCFG/X86/switch-to-lookup-globals.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

45 lines
1.8 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: -p
; RUN: opt -S -passes="simplifycfg<switch-to-lookup>" < %s | FileCheck %s
target triple = "x86_64-unknown-linux-gnu"
%struct.ham = type <{ i32, i32, i32, i8, i8, [2 x i8] }>
@global = external constant [75 x { i32, i32, i32, i8, i8 }]
define i1 @zot(i32 %arg) {
; CHECK-LABEL: @zot(
; CHECK-NEXT: bb:
; CHECK-NEXT: %0 = icmp ult i32 %arg, 3
; CHECK-NEXT: br i1 %0, label %switch.lookup, label %bb6
; CHECK: switch.lookup:
; CHECK-NEXT: %1 = zext nneg i32 %arg to i64
; CHECK-NEXT: %switch.gep = getelementptr inbounds [3 x ptr], ptr @switch.table.zot, i64 0, i64 %1
; CHECK-NEXT: %switch.load = load ptr, ptr %switch.gep, align 8
; CHECK-NEXT: br label %bb6
; CHECK: bb6:
; CHECK-NEXT: %tmp7 = phi ptr [ null, %bb ], [ %switch.load, %switch.lookup ]
; CHECK-NEXT: %tmp8 = icmp eq ptr %tmp7, getelementptr inbounds ([75 x { i32, i32, i32, i8, i8 }], ptr @global, i64 1, i64 0, i32 0)
; CHECK-NEXT: ret i1 %tmp8
;
bb:
%tmp = icmp eq i32 %arg, 1
br i1 %tmp, label %bb6, label %bb1
bb1: ; preds = %bb
%tmp2 = icmp eq i32 %arg, 2
br i1 %tmp2, label %bb6, label %bb3
bb3: ; preds = %bb1
%tmp4 = icmp eq i32 %arg, 0
br i1 %tmp4, label %bb6, label %bb5
bb5: ; preds = %bb3
br label %bb6
bb6: ; preds = %bb5, %bb3, %bb1, %bb
%tmp7 = phi ptr [ null, %bb5 ], [ getelementptr inbounds ([75 x { i32, i32, i32, i8, i8 }], ptr @global, i64 0, i64 6, i32 0), %bb ], [ null, %bb1 ], [ null, %bb3 ]
%tmp8 = icmp eq ptr %tmp7, getelementptr inbounds ([75 x { i32, i32, i32, i8, i8 }], ptr @global, i64 1, i64 0, i32 0)
ret i1 %tmp8
}