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875e911318
When FMV was added to AArch64, it added a dependency expansion step after the -cc1 command line was parsed but before Sema, in AArch64TargetInfo::initFeatureMap. One effect of this is that -target-features specified on the -cc1 command line had some level of incomplete and broken dependency expansion. Since then, many tests have been added which depend on this behaviour. The dependency expansion can be considered broken at this stage because dependency expansion is already performed by the driver to generate the -target-feature flags using an ExtensionSet. This class does dependency evaluation and then generates a flattened representation of the dependency graph in the form of -target-features, which are passed to -cc1 in an arbitrary order (determined by the order of bits in the bitset). Any dependency expansion done after -cc1 will be inherently contradictory. It is impossible to accurately treat negative features once the dependency graph has been flattened and the order randomised. This patch fixes a large number of those tests, specifically ones where only a dependent feature (e.g. -target-feature +sme2p1) was added to the test -cc1 command, and not the necessary dependencies (e.g. -target-feature +sme). See PR #93695 further details.
11 lines
330 B
C
11 lines
330 B
C
// RUN: %clang_cc1 -triple aarch64-none-linux-gnu -target-feature +bf16 -target-feature +sme -target-feature +sme2 -target-feature +sme2p1 -fsyntax-only -verify %s
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// REQUIRES: aarch64-registered-target
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#include "arm_sme.h"
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svuint8x2_t test_sme2p1(svuint8x2_t x) __arm_streaming {
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// expected-no-diagnostics
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return x;
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}
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