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[AVX-512] Make VBMI instruction set enabling imply that the BWI instruction set is also enabled. 

Summary: This is needed to make the v64i8 and v32i16 types legal for the 512-bit VBMI instructions. Fixes PR30912.

Reviewers: delena, zvi

Subscribers: RKSimon, cfe-commits

Differential Revision: https://reviews.llvm.org/D26306

llvm-svn: 286340
This commit is contained in:
Craig Topper 2016-11-09 04:51:03 +00:00
parent 5c842be9a0
commit 6c7ecc5341
2 changed files with 12 additions and 0 deletions
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6
clang/lib/Basic/Targets.cpp
View File

@ -3351,6 +3351,12 @@ void X86TargetInfo::setFeatureEnabledImpl(llvm::StringMap<bool> &Features,
Name == "avx512vbmi" || Name == "avx512ifma") {
if (Enabled)
setSSELevel(Features, AVX512F, Enabled);
// Enable BWI instruction if VBMI is being enabled.
if (Name == "avx512vbmi" && Enabled)
Features["avx512bw"] = true;
// Also disable VBMI if BWI is being disabled.
if (Name == "avx512bw" && !Enabled)
Features["avx512vbmi"] = false;
} else if (Name == "fma") {
if (Enabled)
setSSELevel(Features, AVX, Enabled);

6
clang/test/Preprocessor/x86_target_features.c
View File

@ -196,6 +196,7 @@
// RUN: %clang -target i386-unknown-unknown -march=atom -mavx512vbmi -x c -E -dM -o - %s | FileCheck -match-full-lines --check-prefix=AVX512VBMI %s
// AVX512VBMI: #define __AVX2__ 1
// AVX512VBMI: #define __AVX512BW__ 1
// AVX512VBMI: #define __AVX512F__ 1
// AVX512VBMI: #define __AVX512VBMI__ 1
// AVX512VBMI: #define __AVX__ 1
@ -208,6 +209,11 @@
// AVX512VBMI: #define __SSE__ 1
// AVX512VBMI: #define __SSSE3__ 1
// RUN: %clang -target i386-unknown-unknown -march=atom -mavx512vbmi -mno-avx512bw -x c -E -dM -o - %s | FileCheck -match-full-lines --check-prefix=AVX512VBMINOAVX512BW %s
// AVX512VBMINOAVX512BW-NOT: #define __AVX512BW__ 1
// AVX512VBMINOAVX512BW-NOT: #define __AVX512VBMI__ 1
// RUN: %clang -target i386-unknown-unknown -march=atom -msse4.2 -x c -E -dM -o - %s | FileCheck -match-full-lines --check-prefix=SSE42POPCNT %s
// SSE42POPCNT: #define __POPCNT__ 1