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bde073f537
The backend has been around for years, it's pretty ridiculous that we can't even use the preferred form for printing "MOV" aliases. Unfortunately, TableGen can't handle the complex predicates when printing so it's a bunch of nasty C++. Oh well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272865 91177308-0d34-0410-b5e6-96231b3b80d8
38 lines
1.2 KiB
LLVM
38 lines
1.2 KiB
LLVM
; RUN: llc -O0 -fast-isel-abort=1 -verify-machineinstrs -mtriple=arm64-apple-darwin < %s | FileCheck %s
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; Test load/store of global value from global offset table.
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@seed = common global i64 0, align 8
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define void @Initrand() nounwind {
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entry:
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; CHECK: @Initrand
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; CHECK: adrp [[REG:x[0-9]+]], _seed@GOTPAGE
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; CHECK: ldr [[REG2:x[0-9]+]], {{\[}}[[REG]], _seed@GOTPAGEOFF{{\]}}
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; CHECK: str {{x[0-9]+}}, {{\[}}[[REG2]]{{\]}}
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store i64 74755, i64* @seed, align 8
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ret void
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}
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define i32 @Rand() nounwind {
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entry:
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; CHECK: @Rand
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; CHECK: adrp [[REG1:x[0-9]+]], _seed@GOTPAGE
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; CHECK: ldr [[REG2:x[0-9]+]], {{\[}}[[REG1]], _seed@GOTPAGEOFF{{\]}}
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; CHECK: mov [[REG3:x[0-9]+]], #13849
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; CHECK: mov [[REG4:x[0-9]+]], #1309
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; CHECK: ldr [[REG5:x[0-9]+]], {{\[}}[[REG2]]{{\]}}
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; CHECK: mul [[REG6:x[0-9]+]], [[REG5]], [[REG4]]
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; CHECK: add [[REG7:x[0-9]+]], [[REG6]], [[REG3]]
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; CHECK: and [[REG8:x[0-9]+]], [[REG7]], #0xffff
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; CHECK: str [[REG8]], {{\[}}[[REG1]]{{\]}}
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; CHECK: ldr {{x[0-9]+}}, {{\[}}[[REG1]]{{\]}}
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%0 = load i64, i64* @seed, align 8
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%mul = mul nsw i64 %0, 1309
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%add = add nsw i64 %mul, 13849
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%and = and i64 %add, 65535
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store i64 %and, i64* @seed, align 8
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%1 = load i64, i64* @seed, align 8
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%conv = trunc i64 %1 to i32
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ret i32 %conv
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}
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