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Add hardware division as a default feature on Cortex-A15. Also add test cases to check this, and change diagnostics for the hwdiv-arm feature to something useful.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192963 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Silviu Baranga 2013-10-18 10:18:40 +00:00
parent e019c08bf6
commit b1c480900b
4 changed files with 64 additions and 2 deletions
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1
lib/Target/ARM/ARM.td
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@ -194,6 +194,7 @@ def ProcSwift : SubtargetFeature<"swift", "ARMProcFamily", "Swift",
def ProcA15 : SubtargetFeature<"a15", "ARMProcFamily", "CortexA15",
"Cortex-A15 ARM processors",
[FeatureT2XtPk, FeatureVFP4,
FeatureMP, FeatureHWDiv, FeatureHWDivARM,
FeatureAvoidPartialCPSR,
FeatureTrustZone]>;

4
lib/Target/ARM/ARMInstrInfo.td
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@ -221,9 +221,9 @@ def HasCrypto : Predicate<"Subtarget->hasCrypto()">,
def HasFP16 : Predicate<"Subtarget->hasFP16()">,
AssemblerPredicate<"FeatureFP16","half-float">;
def HasDivide : Predicate<"Subtarget->hasDivide()">,
AssemblerPredicate<"FeatureHWDiv", "divide">;
AssemblerPredicate<"FeatureHWDiv", "divide in THUMB">;
def HasDivideInARM : Predicate<"Subtarget->hasDivideInARMMode()">,
AssemblerPredicate<"FeatureHWDivARM">;
AssemblerPredicate<"FeatureHWDivARM", "divide in ARM">;
def HasT2ExtractPack : Predicate<"Subtarget->hasT2ExtractPack()">,
AssemblerPredicate<"FeatureT2XtPk",
"pack/extract">;

33
test/MC/ARM/idiv.s Normal file
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@ -0,0 +1,33 @@
@ RUN: llvm-mc -triple=armv7 -mcpu=cortex-a15 -show-encoding < %s 2>&1 | FileCheck -check-prefix A15-ARM %s
@ RUN: llvm-mc -triple=thumbv7 -mcpu=cortex-a15 -show-encoding < %s 2>&1 | FileCheck -check-prefix A15-THUMB %s
@ RUN: llvm-mc -triple=armv7 -mcpu=cortex-a15 -mattr=-hwdiv -show-encoding < %s 2>&1 | FileCheck -check-prefix A15-ARM-NOTHUMBHWDIV %s
@ RUN: llvm-mc -triple=thumbv7 -mcpu=cortex-a15 -mattr=-hwdiv-arm -show-encoding < %s 2>&1 | FileCheck -check-prefix A15-THUMB-NOARMHWDIV %s
@ RUN: llvm-mc -triple=armv8 -show-encoding < %s 2>&1 | FileCheck -check-prefix ARMV8 %s
@ RUN: llvm-mc -triple=thumbv8 -show-encoding < %s 2>&1 | FileCheck -check-prefix THUMBV8 %s
@ RUN: llvm-mc -triple=armv8 -mattr=-hwdiv -show-encoding < %s 2>&1 | FileCheck -check-prefix ARMV8-NOTHUMBHWDIV %s
@ RUN: llvm-mc -triple=thumbv8 -mattr=-hwdiv-arm -show-encoding < %s 2>&1 | FileCheck -check-prefix THUMBV8-NOTHUMBHWDIV %s
sdiv r1, r2, r3
udiv r3, r4, r5
@ A15-ARM: sdiv r1, r2, r3 @ encoding: [0x12,0xf3,0x11,0xe7]
@ A15-ARM: udiv r3, r4, r5 @ encoding: [0x14,0xf5,0x33,0xe7]
@ A15-THUMB: sdiv r1, r2, r3 @ encoding: [0x92,0xfb,0xf3,0xf1]
@ A15-THUMB: udiv r3, r4, r5 @ encoding: [0xb4,0xfb,0xf5,0xf3]
@ A15-ARM-NOTHUMBHWDIV: sdiv r1, r2, r3 @ encoding: [0x12,0xf3,0x11,0xe7]
@ A15-ARM-NOTHUMBHWDIV: udiv r3, r4, r5 @ encoding: [0x14,0xf5,0x33,0xe7]
@ A15-THUMB-NOARMHWDIV: sdiv r1, r2, r3 @ encoding: [0x92,0xfb,0xf3,0xf1]
@ A15-THUMB-NOARMHWDIV: udiv r3, r4, r5 @ encoding: [0xb4,0xfb,0xf5,0xf3]
@ ARMV8: sdiv r1, r2, r3 @ encoding: [0x12,0xf3,0x11,0xe7]
@ ARMV8: udiv r3, r4, r5 @ encoding: [0x14,0xf5,0x33,0xe7]
@ THUMBV8: sdiv r1, r2, r3 @ encoding: [0x92,0xfb,0xf3,0xf1]
@ THUMBV8: udiv r3, r4, r5 @ encoding: [0xb4,0xfb,0xf5,0xf3]
@ ARMV8-NOTHUMBHWDIV: sdiv r1, r2, r3 @ encoding: [0x12,0xf3,0x11,0xe7]
@ ARMV8-NOTHUMBHWDIV: udiv r3, r4, r5 @ encoding: [0x14,0xf5,0x33,0xe7]
@ THUMBV8-NOTHUMBHWDIV: sdiv r1, r2, r3 @ encoding: [0x92,0xfb,0xf3,0xf1]
@ THUMBV8-NOTHUMBHWDIV: udiv r3, r4, r5 @ encoding: [0xb4,0xfb,0xf5,0xf3]

28
test/MC/ARM/invalid-idiv.s Normal file
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@ -0,0 +1,28 @@
@ RUN: not llvm-mc -triple=armv7 -mcpu=cortex-a15 -mattr=-hwdiv-arm < %s 2> %t
@ RUN: FileCheck --check-prefix=ARM-A15 < %t %s
@ RUN: not llvm-mc -triple=thumbv7 -mcpu=cortex-a15 -mattr=-hwdiv < %s 2> %t
@ RUN: FileCheck --check-prefix=THUMB-A15 < %t %s
@ RUN: not llvm-mc -triple=armv7 < %s 2> %t
@ RUN: FileCheck --check-prefix=ARM < %t %s
@ RUN: not llvm-mc -triple=thumbv7 < %s 2> %t
@ RUN: FileCheck --check-prefix=THUMB < %t %s
sdiv r1, r2, r3
udiv r3, r4, r5
@ ARM-A15: error: instruction requires: divide in ARM
@ ARM-A15: sdiv r1, r2, r3
@ ARM-A15: error: instruction requires: divide in ARM
@ ARM-A15: udiv r3, r4, r5
@ THUMB-A15: error: instruction requires: arm-mode
@ THUMB-A15: sdiv r1, r2, r3
@ THUMB-A15: error: instruction requires: arm-mode
@ THUMB-A15: udiv r3, r4, r5
@ ARM: error: instruction requires: divide in ARM
@ ARM: sdiv r1, r2, r3
@ ARM: error: instruction requires: divide in ARM
@ ARM: udiv r3, r4, r5
@ THUMB: error: instruction requires: divide in THUMB
@ THUMB: sdiv r1, r2, r3
@ THUMB: error: instruction requires: divide in THUMB
@ THUMB: udiv r3, r4, r5