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6bf4f263ac
Summary: The linker is free to relax this (relocation R_PPC_GOT_TPREL16) against R_PPC_TLS, if it sees fit (initial exec to local exec). If r0 is used, this can generate execution-invalid code (converts to 'addi %rX, %r0, FOO, which translates in PPC-lingo to li %rX, FOO). Forbid this instead. This fixes static binaries using locales on FreeBSD/powerpc (tested on FreeBSD/powerpcspe). Reviewed By: nemanjai Differential Revision: https://reviews.llvm.org/D76662
55 lines
2.2 KiB
LLVM
55 lines
2.2 KiB
LLVM
; RUN: llc -relocation-model=static -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu \
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; RUN: -O0 < %s -mcpu=ppc64 | FileCheck -check-prefix=OPT0 %s
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; RUN: llc -relocation-model=static -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu \
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; RUN: -O1 < %s -mcpu=ppc64 | FileCheck -check-prefix=OPT1 %s
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; RUN: llc -verify-machineinstrs -O0 < %s -mtriple=ppc32-- -mcpu=ppc | FileCheck -check-prefix=OPT0-PPC32 %s
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; RUN: llc -relocation-model=pic -verify-machineinstrs -O0 < %s -mtriple=ppc32-- -mcpu=ppc | FileCheck -check-prefix=OPT0-PPC32-PIC %s
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@a = thread_local global i32 0, align 4
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;OPT0-LABEL: localexec:
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;OPT1-LABEL: localexec:
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define i32 @localexec() nounwind {
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entry:
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;OPT0: addis [[REG1:[1-9][0-9]*]], 13, a@tprel@ha
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;OPT0-NEXT: addi [[REG2:[1-9][0-9]*]], [[REG1]], a@tprel@l
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;OPT0-NEXT: li [[REG3:[0-9]+]], 42
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;OPT0: stw [[REG3]], 0([[REG2]])
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;OPT1: addis [[REG1:[1-9][0-9]*]], 13, a@tprel@ha
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;OPT1-NEXT: li [[REG3:[0-9]+]], 42
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;OPT1: stw [[REG3]], a@tprel@l([[REG1]])
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store i32 42, i32* @a, align 4
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ret i32 0
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}
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; Test correct assembly code generation for thread-local storage
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; using the initial-exec model.
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@a2 = external thread_local(initialexec) global i32
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define signext i32 @main2() nounwind {
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entry:
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%retval = alloca i32, align 4
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store i32 0, i32* %retval
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%0 = load i32, i32* @a2, align 4
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ret i32 %0
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}
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; OPT1-LABEL: main2:
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; OPT1: addis [[REG1:[1-9][0-9]*]], 2, a2@got@tprel@ha
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; OPT1: ld [[REG2:[0-9]+]], a2@got@tprel@l([[REG1]])
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; OPT1: add {{[0-9]+}}, [[REG2]], a2@tls
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;OPT0-PPC32-LABEL: main2:
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;OPT0-PPC32: li [[REG1:[1-9][0-9]*]], _GLOBAL_OFFSET_TABLE_@l
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;OPT0-PPC32: addis [[REG1]], [[REG1]], _GLOBAL_OFFSET_TABLE_@ha
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;OPT0-PPC32: lwz [[REG2:[1-9][0-9]*]], a2@got@tprel([[REG1]])
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;OPT0-PPC32: add 3, [[REG2]], a2@tls
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;OPT0-PPC32-PIC-LABEL: main2:
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;OPT0-PPC32-PIC: .long _GLOBAL_OFFSET_TABLE_-{{.*}}
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;OPT0-PPC32-PIC-NOT: li {{[0-9]+}}, _GLOBAL_OFFSET_TABLE_@l
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;OPT0-PPC32-PIC-NOT: addis {{[0-9]+}}, {{[1-9][0-9*]}}, _GLOBAL_OFFSET_TABLE_@ha
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;OPT0-PPC32-PIC-NOT: bl __tls_get_addr(a2@tlsgd)@PLT
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;OPT0-PPC32-PIC: lwz {{[0-9]+}}, a2@got@tprel({{[1-9][0-9]*}})
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