09d51a841d
Following the aix-small-local-exec-tls target attribute, this patch adds a target attribute for an AIX-specific option in llc that informs the compiler that it can use a faster access sequence for the local-dynamic TLS model (formally named aix-small-local-dynamic-tls) when TLS variables are less than ~32KB in size. The patch either produces an addi/la with a displacement off of module handle (return value from .__tls_get_mod) when the address is calculated, or it produces an addi/la followed by a load/store when the address is calculated and used for further accesses. --------- Co-authored-by: Amy Kwan <amy.kwan1@ibm.com>
31 lines
1.5 KiB
LLVM
31 lines
1.5 KiB
LLVM
; RUN: llc -mtriple powerpc64-ibm-aix-xcoff -mattr=+aix-small-local-exec-tls \
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; RUN: -ppc-asm-full-reg-names < %s | FileCheck %s
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; RUN: not llc -mtriple powerpc-ibm-aix-xcoff -mattr=+aix-small-local-exec-tls \
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; RUN: -ppc-asm-full-reg-names < %s 2>&1 | \
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; RUN: FileCheck %s --check-prefix=CHECK-NOT-SUPPORTED
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; RUN: not llc -mtriple powerpc64le-unknown-linux-gnu -mattr=+aix-small-local-exec-tls \
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; RUN: -ppc-asm-full-reg-names < %s 2>&1 | \
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; RUN: FileCheck %s --check-prefix=CHECK-NOT-SUPPORTED
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; RUN: llc -mtriple powerpc64-ibm-aix-xcoff -mattr=+aix-small-local-dynamic-tls \
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; RUN: -ppc-asm-full-reg-names < %s | FileCheck %s
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; RUN: not llc -mtriple powerpc-ibm-aix-xcoff -mattr=+aix-small-local-dynamic-tls \
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; RUN: -ppc-asm-full-reg-names < %s 2>&1 | \
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; RUN: FileCheck %s --check-prefix=CHECK-NOT-SUPPORTED
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; RUN: not llc -mtriple powerpc64le-unknown-linux-gnu -mattr=+aix-small-local-dynamic-tls \
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; RUN: -ppc-asm-full-reg-names < %s 2>&1 | \
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; RUN: FileCheck %s --check-prefix=CHECK-NOT-SUPPORTED
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define dso_local signext i32 @testNoIRAttr() {
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entry:
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ret i32 0
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}
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; Check that the aix-small-local-[exec|dynamic]-tls attribute is not supported on Linux and AIX (32-bit).
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; CHECK-NOT-SUPPORTED: The aix-small-local-[exec|dynamic]-tls attribute is only supported on AIX in 64-bit mode.
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; Make sure that the test was actually compiled successfully after using the
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; aix-small-local-[exec|dynamic]-tls attribute.
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; CHECK-LABEL: testNoIRAttr:
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; CHECK: li r3, 0
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; CHECK-NEXT: blr
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