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4ebd240de7
Reuse the logic for INSERT_SUBREG to also import SUBREG_TO_REG patterns. - Split `inferSuperRegisterClass` into two functions, one which tries to use an existing TreePatternNode (`inferSuperRegisterClassForNode`), and one that doesn't. SUBREG_TO_REG doesn't have a node to leverage, which is the cause for the split. - Rename GlobalISelEmitterInsertSubreg.td to GlobalISelEmitterSubreg.td and update it. - Update impacted tests in the AArch64 and X86 backends. This is kind of a hit/miss for code size improvements/regressions. E.g. in add-ext.ll, we now get some identity copies. This isn't really anything the importer can handle, since it's caused by a later pass introducing the copy for the sake of correctness. Differential Revision: https://reviews.llvm.org/D66769 llvm-svn: 370254
48 lines
1.6 KiB
LLVM
48 lines
1.6 KiB
LLVM
; RUN: llc -O0 -fast-isel -fast-isel-abort=1 -verify-machineinstrs -mtriple=arm64-apple-darwin < %s | FileCheck %s
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@sortlist = common global [5001 x i32] zeroinitializer, align 16
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@sortlist2 = common global [5001 x i64] zeroinitializer, align 16
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; Load an address with an offset larget then LDR imm can handle
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define i32 @foo() nounwind {
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entry:
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; CHECK-LABEL: @foo
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; CHECK: adrp x[[REG:[0-9]+]], _sortlist@GOTPAGE
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; CHECK: ldr x[[REG1:[0-9]+]], [x[[REG]], _sortlist@GOTPAGEOFF]
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; CHECK: mov x[[REG2:[0-9]+]], #20000
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; CHECK: add x[[REG3:[0-9]+]], x[[REG1]], x[[REG2]]
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; CHECK: ldr w0, [x[[REG3]]]
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; CHECK: ret
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%0 = load i32, i32* getelementptr inbounds ([5001 x i32], [5001 x i32]* @sortlist, i32 0, i64 5000), align 4
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ret i32 %0
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}
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define i64 @foo2() nounwind {
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entry:
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; CHECK-LABEL: @foo2
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; CHECK: adrp x[[REG:[0-9]+]], _sortlist2@GOTPAGE
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; CHECK: ldr x[[REG1:[0-9]+]], [x[[REG]], _sortlist2@GOTPAGEOFF]
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; CHECK: mov x[[REG2:[0-9]+]], #40000
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; CHECK: add x[[REG3:[0-9]+]], x[[REG1]], x[[REG2]]
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; CHECK: ldr x0, [x[[REG3]]]
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; CHECK: ret
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%0 = load i64, i64* getelementptr inbounds ([5001 x i64], [5001 x i64]* @sortlist2, i32 0, i64 5000), align 4
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ret i64 %0
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}
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; Load an address with a ridiculously large offset.
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; rdar://12505553
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@pd2 = common global i8* null, align 8
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define signext i8 @foo3() nounwind ssp {
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entry:
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; CHECK-LABEL: @foo3
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; CHECK: mov x[[REG:[0-9]+]], #12274
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; CHECK: movk x[[REG]], #29646, lsl #16
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; CHECK: movk x[[REG]], #2874, lsl #32
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%0 = load i8*, i8** @pd2, align 8
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%arrayidx = getelementptr inbounds i8, i8* %0, i64 12345678901234
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%1 = load i8, i8* %arrayidx, align 1
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ret i8 %1
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}
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