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ARM: further correct .fpu directive handling

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If the original FPU specification involved a restricted VFP unit (d16), ensure
that we reset the functionality when we encounter a new FPU type.  In
particular, if the user specified vfpv3-d16, but switched to a VFPv3 (which has
32 double precision registers), we would fail to reset the D16 feature, and
treat it as being equivalent to vfpv3-d16.

llvm-svn: 227603
This commit is contained in:
Saleem Abdulrasool 2015-01-30 19:35:18 +00:00
parent 24c7de487f
commit 686f2daedf
2 changed files with 46 additions and 7 deletions
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16
lib/Target/ARM/AsmParser/ARMAsmParser.cpp
View File

@ -9197,11 +9197,12 @@ static const struct {
} FPUs[] = {
{ARM::VFP, ARM::FeatureVFP2, ARM::FeatureNEON},
{ARM::VFPV2, ARM::FeatureVFP2, ARM::FeatureNEON},
{ARM::VFPV3, ARM::FeatureVFP2 | ARM::FeatureVFP3, ARM::FeatureNEON},
{ARM::VFPV3, ARM::FeatureVFP2 | ARM::FeatureVFP3,
ARM::FeatureNEON | ARM::FeatureD16},
{ARM::VFPV3_D16, ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureD16,
ARM::FeatureNEON},
{ARM::VFPV4, ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureVFP4,
ARM::FeatureNEON},
ARM::FeatureNEON | ARM::FeatureD16},
{ARM::VFPV4_D16,
ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureVFP4 | ARM::FeatureD16,
ARM::FeatureNEON},
@ -9210,19 +9211,20 @@ static const struct {
ARM::FeatureNEON | ARM::FeatureCrypto},
{ARM::FP_ARMV8, ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureVFP4 |
ARM::FeatureFPARMv8,
ARM::FeatureNEON | ARM::FeatureCrypto},
{ARM::NEON, ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureNEON, 0},
ARM::FeatureNEON | ARM::FeatureCrypto | ARM::FeatureD16},
{ARM::NEON, ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureNEON,
ARM::FeatureD16},
{ARM::NEON_VFPV4,
ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureVFP4 | ARM::FeatureNEON,
0},
ARM::FeatureD16},
{ARM::NEON_FP_ARMV8,
ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureVFP4 |
ARM::FeatureFPARMv8 | ARM::FeatureNEON,
ARM::FeatureCrypto},
ARM::FeatureCrypto | ARM::FeatureD16},
{ARM::CRYPTO_NEON_FP_ARMV8,
ARM::FeatureVFP2 | ARM::FeatureVFP3 | ARM::FeatureVFP4 |
ARM::FeatureFPARMv8 | ARM::FeatureNEON | ARM::FeatureCrypto,
0},
ARM::FeatureD16},
{ARM::SOFTVFP, 0, 0},
};

37
test/MC/ARM/pr22395-2.s Normal file
View File

@ -0,0 +1,37 @@
@ RUN: llvm-mc -triple armv4t-eabi -mattr +d16 -filetype asm -o - %s 2>&1 | FileCheck %s
.text
.thumb
.p2align 2
.fpu vfpv3
vldmia r0, {d16-d31}
@ CHECK: vldmia r0, {d16, d17, d18, d19, d20, d21, d22, d23, d24, d25, d26, d27, d28, d29, d30, d31}
@ CHECK-NOT: error: register expected
.fpu vfpv4
vldmia r0, {d16-d31}
@ CHECK: vldmia r0, {d16, d17, d18, d19, d20, d21, d22, d23, d24, d25, d26, d27, d28, d29, d30, d31}
@ CHECK-NOT: error: register expected
.fpu neon
vldmia r0, {d16-d31}
@ CHECK: vldmia r0, {d16, d17, d18, d19, d20, d21, d22, d23, d24, d25, d26, d27, d28, d29, d30, d31}
@ CHECK-NOT: error: register expected
.fpu neon-vfpv4
vldmia r0, {d16-d31}
@ CHECK: vldmia r0, {d16, d17, d18, d19, d20, d21, d22, d23, d24, d25, d26, d27, d28, d29, d30, d31}
@ CHECK-NOT: error: register expected
.fpu neon-fp-armv8
vldmia r0, {d16-d31}
@ CHECK: vldmia r0, {d16, d17, d18, d19, d20, d21, d22, d23, d24, d25, d26, d27, d28, d29, d30, d31}
@ CHECK-NOT: error: register expected
.fpu crypto-neon-fp-armv8
vldmia r0, {d16-d31}
@ CHECK: vldmia r0, {d16, d17, d18, d19, d20, d21, d22, d23, d24, d25, d26, d27, d28, d29, d30, d31}
@ CHECK-NOT: error: register expected