[llvm] r246500 - WebAssembly: generate load/store
JF Bastien via llvm-commits
llvm-commits at lists.llvm.org
Mon Aug 31 15:24:11 PDT 2015
Author: jfb
Date: Mon Aug 31 17:24:11 2015
New Revision: 246500
URL: http://llvm.org/viewvc/llvm-project?rev=246500&view=rev
Log:
WebAssembly: generate load/store
Summary: This handles all load/store operations that WebAssembly defines, and handles those necessary for C++ such as i1. I left a FIXME for outstanding features which aren't required for now.
Reviewers: sunfish
Subscribers: jfb, llvm-commits, dschuff
Added:
llvm/trunk/test/CodeGen/WebAssembly/load-ext.ll
llvm/trunk/test/CodeGen/WebAssembly/load-store-i1.ll
llvm/trunk/test/CodeGen/WebAssembly/load.ll
llvm/trunk/test/CodeGen/WebAssembly/store-trunc.ll
llvm/trunk/test/CodeGen/WebAssembly/store.ll
Modified:
llvm/trunk/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp
llvm/trunk/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
llvm/trunk/lib/Target/WebAssembly/WebAssemblyInstrMemory.td
Modified: llvm/trunk/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp?rev=246500&r1=246499&r2=246500&view=diff
==============================================================================
--- llvm/trunk/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp (original)
+++ llvm/trunk/lib/Target/WebAssembly/WebAssemblyAsmPrinter.cpp Mon Aug 31 17:24:11 2015
@@ -40,6 +40,7 @@ using namespace llvm;
namespace {
class WebAssemblyAsmPrinter final : public AsmPrinter {
+ bool hasAddr64;
const WebAssemblyInstrInfo *TII;
public:
@@ -60,7 +61,9 @@ private:
}
bool runOnMachineFunction(MachineFunction &MF) override {
- TII = MF.getSubtarget<WebAssemblySubtarget>().getInstrInfo();
+ const auto &Subtarget = MF.getSubtarget<WebAssemblySubtarget>();
+ hasAddr64 = Subtarget.hasAddr64();
+ TII = Subtarget.getInstrInfo();
return AsmPrinter::runOnMachineFunction(MF);
}
@@ -97,23 +100,6 @@ static SmallString<32> OpcodeName(const
static std::string toSymbol(StringRef S) { return ("$" + S).str(); }
-static const char *toString(const Type *Ty) {
- switch (Ty->getTypeID()) {
- default: break;
- case Type::FloatTyID: return "f32";
- case Type::DoubleTyID: return "f64";
- case Type::IntegerTyID:
- switch (Ty->getIntegerBitWidth()) {
- case 32: return "i32";
- case 64: return "i64";
- default: break;
- }
- }
- DEBUG(dbgs() << "Invalid type "; Ty->print(dbgs()); dbgs() << '\n');
- llvm_unreachable("invalid type");
- return "<invalid>";
-}
-
static std::string toString(const APFloat &FP) {
static const size_t BufBytes = 128;
char buf[BufBytes];
@@ -131,6 +117,28 @@ static std::string toString(const APFloa
return buf;
}
+static const char *toString(const Type *Ty, bool hasAddr64) {
+ switch (Ty->getTypeID()) {
+ default: break;
+ // Treat all pointers as the underlying integer into linear memory.
+ case Type::PointerTyID: return hasAddr64 ? "i64" : "i32";
+ case Type::FloatTyID: return "f32";
+ case Type::DoubleTyID: return "f64";
+ case Type::IntegerTyID:
+ switch (Ty->getIntegerBitWidth()) {
+ case 8: return "i8";
+ case 16: return "i16";
+ case 32: return "i32";
+ case 64: return "i64";
+ default: break;
+ }
+ }
+ DEBUG(dbgs() << "Invalid type "; Ty->print(dbgs()); dbgs() << '\n');
+ llvm_unreachable("invalid type");
+ return "<invalid>";
+}
+
+
//===----------------------------------------------------------------------===//
// WebAssemblyAsmPrinter Implementation.
//===----------------------------------------------------------------------===//
@@ -186,7 +194,8 @@ void WebAssemblyAsmPrinter::EmitGlobalVa
return;
}
- OS << "(global " << toSymbol(Name) << ' ' << toString(Init->getType()) << ' ';
+ OS << "(global " << toSymbol(Name) << ' '
+ << toString(Init->getType(), hasAddr64) << ' ';
if (const auto *C = dyn_cast<ConstantInt>(Init)) {
assert(C->getBitWidth() <= 64 && "Printing wider types unimplemented");
OS << C->getZExtValue();
@@ -228,10 +237,10 @@ void WebAssemblyAsmPrinter::EmitFunction
raw_svector_ostream OS(Str);
const Function *F = MF->getFunction();
for (const Argument &A : F->args())
- OS << " (param " << toString(A.getType()) << ')';
+ OS << " (param " << toString(A.getType(), hasAddr64) << ')';
const Type *Rt = F->getReturnType();
if (!Rt->isVoidTy())
- OS << " (result " << toString(Rt) << ')';
+ OS << " (result " << toString(Rt, hasAddr64) << ')';
OS << '\n';
OutStreamer->EmitRawText(OS.str());
}
Modified: llvm/trunk/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp?rev=246500&r1=246499&r2=246500&view=diff
==============================================================================
--- llvm/trunk/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp Mon Aug 31 17:24:11 2015
@@ -113,8 +113,6 @@ WebAssemblyTargetLowering::WebAssemblyTa
// Compute derived properties from the register classes.
computeRegisterProperties(Subtarget->getRegisterInfo());
- // FIXME: many setOperationAction are missing...
-
setOperationAction(ISD::GlobalAddress, MVTPtr, Custom);
for (auto T : {MVT::f32, MVT::f64}) {
@@ -154,6 +152,16 @@ WebAssemblyTargetLowering::WebAssemblyTa
setOperationAction(ISD::STACKSAVE, MVT::Other, Expand);
setOperationAction(ISD::STACKRESTORE, MVT::Other, Expand);
setOperationAction(ISD::DYNAMIC_STACKALLOC, MVTPtr, Expand);
+
+ // WebAssembly doesn't have:
+ // - Floating-point extending loads.
+ // - Floating-point truncating stores.
+ // - i1 extending loads.
+ setLoadExtAction(ISD::EXTLOAD, MVT::f32, MVT::f64, Expand);
+ setTruncStoreAction(MVT::f64, MVT::f32, Expand);
+ for (auto T : MVT::integer_valuetypes())
+ for (auto Ext : {ISD::EXTLOAD, ISD::ZEXTLOAD, ISD::SEXTLOAD})
+ setLoadExtAction(Ext, T, MVT::i1, Promote);
}
FastISel *WebAssemblyTargetLowering::createFastISel(
Modified: llvm/trunk/lib/Target/WebAssembly/WebAssemblyInstrMemory.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/WebAssembly/WebAssemblyInstrMemory.td?rev=246500&r1=246499&r2=246500&view=diff
==============================================================================
--- llvm/trunk/lib/Target/WebAssembly/WebAssemblyInstrMemory.td (original)
+++ llvm/trunk/lib/Target/WebAssembly/WebAssemblyInstrMemory.td Mon Aug 31 17:24:11 2015
@@ -14,37 +14,84 @@
/*
* TODO(jfb): Add the following.
- * Each has optional alignment and immediate byte offset.
- *
- * int32.load_sx[int8]: sign-extend to int32
- * int32.load_sx[int16]: sign-extend to int32
- * int32.load_zx[int8]: zero-extend to int32
- * int32.load_zx[int16]: zero-extend to int32
- * int32.load[int32]: (no conversion)
- * int64.load_sx[int8]: sign-extend to int64
- * int64.load_sx[int16]: sign-extend to int64
- * int64.load_sx[int32]: sign-extend to int64
- * int64.load_zx[int8]: zero-extend to int64
- * int64.load_zx[int16]: zero-extend to int64
- * int64.load_zx[int32]: zero-extend to int64
- * int64.load[int64]: (no conversion)
- * float32.load[float32]: (no conversion)
- * float64.load[float64]: (no conversion)
- *
- * int32.store[int8]: wrap int32 to int8
- * int32.store[int16]: wrap int32 to int16
- * int32.store[int32]: (no conversion)
- * int64.store[int8]: wrap int64 to int8
- * int64.store[int16]: wrap int64 to int16
- * int64.store[int32]: wrap int64 to int32
- * int64.store[int64]: (no conversion)
- * float32.store[float32]: (no conversion)
- * float64.store[float64]: (no conversion)
*
* load_global: load the value of a given global variable
* store_global: store a given value to a given global variable
*/
+// FIXME:
+// - HasAddr64
+// - WebAssemblyTargetLowering::isLegalAddressingMode
+// - WebAssemblyTargetLowering having to do with atomics
+// - Each has optional alignment and immediate byte offset.
+
+// WebAssembly has i8/i16/i32/i64/f32/f64 memory types, but doesn't have i8/i16
+// local types. These memory-only types instead zero- or sign-extend into local
+// types when loading, and truncate when storing.
+
+// Basic load.
+def LOAD_I32_ : I<(outs Int32:$dst), (ins Int32:$addr),
+ [(set Int32:$dst, (load Int32:$addr))]>;
+def LOAD_I64_ : I<(outs Int64:$dst), (ins Int32:$addr),
+ [(set Int64:$dst, (load Int32:$addr))]>;
+def LOAD_F32_ : I<(outs Float32:$dst), (ins Int32:$addr),
+ [(set Float32:$dst, (load Int32:$addr))]>;
+def LOAD_F64_ : I<(outs Float64:$dst), (ins Int32:$addr),
+ [(set Float64:$dst, (load Int32:$addr))]>;
+
+// Extending load.
+def LOAD_SX_I8_I32_ : I<(outs Int32:$dst), (ins Int32:$addr),
+ [(set Int32:$dst, (sextloadi8 Int32:$addr))]>;
+def LOAD_ZX_I8_I32_ : I<(outs Int32:$dst), (ins Int32:$addr),
+ [(set Int32:$dst, (zextloadi8 Int32:$addr))]>;
+def LOAD_SX_I16_I32_ : I<(outs Int32:$dst), (ins Int32:$addr),
+ [(set Int32:$dst, (sextloadi16 Int32:$addr))]>;
+def LOAD_ZX_I16_I32_ : I<(outs Int32:$dst), (ins Int32:$addr),
+ [(set Int32:$dst, (zextloadi16 Int32:$addr))]>;
+def LOAD_SX_I8_I64_ : I<(outs Int64:$dst), (ins Int32:$addr),
+ [(set Int64:$dst, (sextloadi8 Int32:$addr))]>;
+def LOAD_ZX_I8_I64_ : I<(outs Int64:$dst), (ins Int32:$addr),
+ [(set Int64:$dst, (zextloadi8 Int32:$addr))]>;
+def LOAD_SX_I16_I64_ : I<(outs Int64:$dst), (ins Int32:$addr),
+ [(set Int64:$dst, (sextloadi16 Int32:$addr))]>;
+def LOAD_ZX_I16_I64_ : I<(outs Int64:$dst), (ins Int32:$addr),
+ [(set Int64:$dst, (zextloadi16 Int32:$addr))]>;
+def LOAD_SX_I32_I64_ : I<(outs Int64:$dst), (ins Int32:$addr),
+ [(set Int64:$dst, (sextloadi32 Int32:$addr))]>;
+def LOAD_ZX_I32_I64_ : I<(outs Int64:$dst), (ins Int32:$addr),
+ [(set Int64:$dst, (zextloadi32 Int32:$addr))]>;
+
+// "Don't care" extending load become zero-extending load.
+def : Pat<(i32 (extloadi8 Int32:$addr)), (LOAD_ZX_I8_I32_ $addr)>;
+def : Pat<(i32 (extloadi16 Int32:$addr)), (LOAD_ZX_I16_I32_ $addr)>;
+def : Pat<(i64 (extloadi8 Int32:$addr)), (LOAD_ZX_I8_I64_ $addr)>;
+def : Pat<(i64 (extloadi16 Int32:$addr)), (LOAD_ZX_I16_I64_ $addr)>;
+def : Pat<(i64 (extloadi32 Int32:$addr)), (LOAD_ZX_I32_I64_ $addr)>;
+
+// Basic store.
+// Note: WebAssembly inverts SelectionDAG's usual operand order.
+def STORE_I32_ : I<(outs), (ins Int32:$addr, Int32:$val),
+ [(store Int32:$val, Int32:$addr)]>;
+def STORE_I64_ : I<(outs), (ins Int32:$addr, Int64:$val),
+ [(store Int64:$val, Int32:$addr)]>;
+def STORE_F32_ : I<(outs), (ins Int32:$addr, Float32:$val),
+ [(store Float32:$val, Int32:$addr)]>;
+def STORE_F64_ : I<(outs), (ins Int32:$addr, Float64:$val),
+ [(store Float64:$val, Int32:$addr)]>;
+
+// Truncating store.
+def STORE_I8_I32 : I<(outs), (ins Int32:$addr, Int32:$val),
+ [(truncstorei8 Int32:$val, Int32:$addr)]>;
+def STORE_I16_I32 : I<(outs), (ins Int32:$addr, Int32:$val),
+ [(truncstorei16 Int32:$val, Int32:$addr)]>;
+def STORE_I8_I64 : I<(outs), (ins Int32:$addr, Int64:$val),
+ [(truncstorei8 Int64:$val, Int32:$addr)]>;
+def STORE_I16_I64 : I<(outs), (ins Int32:$addr, Int64:$val),
+ [(truncstorei16 Int64:$val, Int32:$addr)]>;
+def STORE_I32_I64 : I<(outs), (ins Int32:$addr, Int64:$val),
+ [(truncstorei32 Int64:$val, Int32:$addr)]>;
+
+// Page size.
def page_size_I32 : I<(outs Int32:$dst), (ins),
[(set Int32:$dst, (int_wasm_page_size))]>,
Requires<[HasAddr32]>;
Added: llvm/trunk/test/CodeGen/WebAssembly/load-ext.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/WebAssembly/load-ext.ll?rev=246500&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/WebAssembly/load-ext.ll (added)
+++ llvm/trunk/test/CodeGen/WebAssembly/load-ext.ll Mon Aug 31 17:24:11 2015
@@ -0,0 +1,86 @@
+; RUN: llc < %s -asm-verbose=false | FileCheck %s
+
+; Test that extending loads are assembled properly.
+
+target datalayout = "e-p:32:32-i64:64-v128:8:128-n32:64-S128"
+target triple = "wasm32-unknown-unknown"
+
+; CHECK-LABEL: (func $sext_i8_i32
+; CHECK: (setlocal @1 (load_sx_i8_i32 @0))
+define i32 @sext_i8_i32(i8 *%p) {
+ %v = load i8, i8* %p
+ %e = sext i8 %v to i32
+ ret i32 %e
+}
+
+; CHECK-LABEL: (func $zext_i8_i32
+; CHECK: (setlocal @1 (load_zx_i8_i32 @0))
+define i32 @zext_i8_i32(i8 *%p) {
+ %v = load i8, i8* %p
+ %e = zext i8 %v to i32
+ ret i32 %e
+}
+
+; CHECK-LABEL: (func $sext_i16_i32
+; CHECK: (setlocal @1 (load_sx_i16_i32 @0))
+define i32 @sext_i16_i32(i16 *%p) {
+ %v = load i16, i16* %p
+ %e = sext i16 %v to i32
+ ret i32 %e
+}
+
+; CHECK-LABEL: (func $zext_i16_i32
+; CHECK: (setlocal @1 (load_zx_i16_i32 @0))
+define i32 @zext_i16_i32(i16 *%p) {
+ %v = load i16, i16* %p
+ %e = zext i16 %v to i32
+ ret i32 %e
+}
+
+; CHECK-LABEL: (func $sext_i8_i64
+; CHECK: (setlocal @1 (load_sx_i8_i64 @0))
+define i64 @sext_i8_i64(i8 *%p) {
+ %v = load i8, i8* %p
+ %e = sext i8 %v to i64
+ ret i64 %e
+}
+
+; CHECK-LABEL: (func $zext_i8_i64
+; CHECK: (setlocal @1 (load_zx_i8_i64 @0))
+define i64 @zext_i8_i64(i8 *%p) {
+ %v = load i8, i8* %p
+ %e = zext i8 %v to i64
+ ret i64 %e
+}
+
+; CHECK-LABEL: (func $sext_i16_i64
+; CHECK: (setlocal @1 (load_sx_i16_i64 @0))
+define i64 @sext_i16_i64(i16 *%p) {
+ %v = load i16, i16* %p
+ %e = sext i16 %v to i64
+ ret i64 %e
+}
+
+; CHECK-LABEL: (func $zext_i16_i64
+; CHECK: (setlocal @1 (load_zx_i16_i64 @0))
+define i64 @zext_i16_i64(i16 *%p) {
+ %v = load i16, i16* %p
+ %e = zext i16 %v to i64
+ ret i64 %e
+}
+
+; CHECK-LABEL: (func $sext_i32_i64
+; CHECK: (setlocal @1 (load_sx_i32_i64 @0))
+define i64 @sext_i32_i64(i32 *%p) {
+ %v = load i32, i32* %p
+ %e = sext i32 %v to i64
+ ret i64 %e
+}
+
+; CHECK-LABEL: (func $zext_i32_i64
+; CHECK: (setlocal @1 (load_zx_i32_i64 @0))
+define i64 @zext_i32_i64(i32 *%p) {
+ %v = load i32, i32* %p
+ %e = zext i32 %v to i64
+ ret i64 %e
+}
Added: llvm/trunk/test/CodeGen/WebAssembly/load-store-i1.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/WebAssembly/load-store-i1.ll?rev=246500&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/WebAssembly/load-store-i1.ll (added)
+++ llvm/trunk/test/CodeGen/WebAssembly/load-store-i1.ll Mon Aug 31 17:24:11 2015
@@ -0,0 +1,68 @@
+; RUN: llc < %s -asm-verbose=false | FileCheck %s
+
+; Test that i1 extending loads and truncating stores are assembled properly.
+
+target datalayout = "e-p:32:32-i64:64-v128:8:128-n32:64-S128"
+target triple = "wasm32-unknown-unknown"
+
+; CHECK-LABEL: (func $load_unsigned_i1_i32
+; CHECK: (setlocal @1 (load_zx_i8_i32 @0))
+; CHECK-NEXT: (return @1)
+define i32 @load_unsigned_i1_i32(i1* %p) {
+ %v = load i1, i1* %p
+ %e = zext i1 %v to i32
+ ret i32 %e
+}
+
+; CHECK-LABEL: (func $load_signed_i1_i32
+; CHECK: (setlocal @1 (load_zx_i8_i32 @0))
+; CHECK-NEXT: (setlocal @2 (immediate 31))
+; CHECK-NEXT: (setlocal @3 (shl @1 @2))
+; CHECK-NEXT: (setlocal @4 (sar @3 @2))
+; CHECK-NEXT: (return @4)
+define i32 @load_signed_i1_i32(i1* %p) {
+ %v = load i1, i1* %p
+ %e = sext i1 %v to i32
+ ret i32 %e
+}
+
+; CHECK-LABEL: (func $load_unsigned_i1_i64
+; CHECK: (setlocal @1 (load_zx_i8_i64 @0))
+; CHECK-NEXT: (return @1)
+define i64 @load_unsigned_i1_i64(i1* %p) {
+ %v = load i1, i1* %p
+ %e = zext i1 %v to i64
+ ret i64 %e
+}
+
+; CHECK-LABEL: (func $load_signed_i1_i64
+; CHECK: (setlocal @1 (load_zx_i8_i64 @0))
+; CHECK-NEXT: (setlocal @2 (immediate 63))
+; CHECK-NEXT: (setlocal @3 (shl @1 @2))
+; CHECK-NEXT: (setlocal @4 (sar @3 @2))
+; CHECK-NEXT: (return @4)
+define i64 @load_signed_i1_i64(i1* %p) {
+ %v = load i1, i1* %p
+ %e = sext i1 %v to i64
+ ret i64 %e
+}
+
+; CHECK-LABEL: (func $store_i32_i1
+; CHECK: (setlocal @2 (immediate 1))
+; CHECK-NEXT: (setlocal @3 (and @1 @2))
+; CHECK-NEXT: (store_i8 @0 @3)
+define void @store_i32_i1(i1* %p, i32 %v) {
+ %t = trunc i32 %v to i1
+ store i1 %t, i1* %p
+ ret void
+}
+
+; CHECK-LABEL: (func $store_i64_i1
+; CHECK: (setlocal @2 (immediate 1))
+; CHECK-NEXT: (setlocal @3 (and @1 @2))
+; CHECK-NEXT: (store_i8 @0 @3)
+define void @store_i64_i1(i1* %p, i64 %v) {
+ %t = trunc i64 %v to i1
+ store i1 %t, i1* %p
+ ret void
+}
Added: llvm/trunk/test/CodeGen/WebAssembly/load.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/WebAssembly/load.ll?rev=246500&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/WebAssembly/load.ll (added)
+++ llvm/trunk/test/CodeGen/WebAssembly/load.ll Mon Aug 31 17:24:11 2015
@@ -0,0 +1,46 @@
+; RUN: llc < %s -asm-verbose=false | FileCheck %s
+
+; Test that basic loads are assembled properly.
+
+target datalayout = "e-p:32:32-i64:64-v128:8:128-n32:64-S128"
+target triple = "wasm32-unknown-unknown"
+
+; CHECK-LABEL: (func $ldi32
+; CHECK-NEXT: (param i32) (result i32)
+; CHECK-NEXT: (setlocal @0 (argument 0))
+; CHECK-NEXT: (setlocal @1 (load_i32 @0))
+; CHECK-NEXT: (return @1)
+define i32 @ldi32(i32 *%p) {
+ %v = load i32, i32* %p
+ ret i32 %v
+}
+
+; CHECK-LABEL: (func $ldi64
+; CHECK-NEXT: (param i32) (result i64)
+; CHECK-NEXT: (setlocal @0 (argument 0))
+; CHECK-NEXT: (setlocal @1 (load_i64 @0))
+; CHECK-NEXT: (return @1)
+define i64 @ldi64(i64 *%p) {
+ %v = load i64, i64* %p
+ ret i64 %v
+}
+
+; CHECK-LABEL: (func $ldf32
+; CHECK-NEXT: (param i32) (result f32)
+; CHECK-NEXT: (setlocal @0 (argument 0))
+; CHECK-NEXT: (setlocal @1 (load_f32 @0))
+; CHECK-NEXT: (return @1)
+define float @ldf32(float *%p) {
+ %v = load float, float* %p
+ ret float %v
+}
+
+; CHECK-LABEL: (func $ldf64
+; CHECK-NEXT: (param i32) (result f64)
+; CHECK-NEXT: (setlocal @0 (argument 0))
+; CHECK-NEXT: (setlocal @1 (load_f64 @0))
+; CHECK-NEXT: (return @1)
+define double @ldf64(double *%p) {
+ %v = load double, double* %p
+ ret double %v
+}
Added: llvm/trunk/test/CodeGen/WebAssembly/store-trunc.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/WebAssembly/store-trunc.ll?rev=246500&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/WebAssembly/store-trunc.ll (added)
+++ llvm/trunk/test/CodeGen/WebAssembly/store-trunc.ll Mon Aug 31 17:24:11 2015
@@ -0,0 +1,46 @@
+; RUN: llc < %s -asm-verbose=false | FileCheck %s
+
+; Test that truncating stores are assembled properly.
+
+target datalayout = "e-p:32:32-i64:64-v128:8:128-n32:64-S128"
+target triple = "wasm32-unknown-unknown"
+
+; CHECK-LABEL: (func $trunc_i8_i32
+; CHECK: (store_i8 @1 @0)
+define void @trunc_i8_i32(i8 *%p, i32 %v) {
+ %t = trunc i32 %v to i8
+ store i8 %t, i8* %p
+ ret void
+}
+
+; CHECK-LABEL: (func $trunc_i16_i32
+; CHECK: (store_i16 @1 @0)
+define void @trunc_i16_i32(i16 *%p, i32 %v) {
+ %t = trunc i32 %v to i16
+ store i16 %t, i16* %p
+ ret void
+}
+
+; CHECK-LABEL: (func $trunc_i8_i64
+; CHECK: (store_i8 @1 @0)
+define void @trunc_i8_i64(i8 *%p, i64 %v) {
+ %t = trunc i64 %v to i8
+ store i8 %t, i8* %p
+ ret void
+}
+
+; CHECK-LABEL: (func $trunc_i16_i64
+; CHECK: (store_i16 @1 @0)
+define void @trunc_i16_i64(i16 *%p, i64 %v) {
+ %t = trunc i64 %v to i16
+ store i16 %t, i16* %p
+ ret void
+}
+
+; CHECK-LABEL: (func $trunc_i32_i64
+; CHECK: (store_i32 @1 @0)
+define void @trunc_i32_i64(i32 *%p, i64 %v) {
+ %t = trunc i64 %v to i32
+ store i32 %t, i32* %p
+ ret void
+}
Added: llvm/trunk/test/CodeGen/WebAssembly/store.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/WebAssembly/store.ll?rev=246500&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/WebAssembly/store.ll (added)
+++ llvm/trunk/test/CodeGen/WebAssembly/store.ll Mon Aug 31 17:24:11 2015
@@ -0,0 +1,50 @@
+; RUN: llc < %s -asm-verbose=false | FileCheck %s
+
+; Test that basic stores are assembled properly.
+
+target datalayout = "e-p:32:32-i64:64-v128:8:128-n32:64-S128"
+target triple = "wasm32-unknown-unknown"
+
+; CHECK-LABEL: (func $sti32
+; CHECK-NEXT: (param i32) (param i32)
+; CHECK-NEXT: (setlocal @0 (argument 1))
+; CHECK-NEXT: (setlocal @1 (argument 0))
+; CHECK-NEXT: (store_i32 @1 @0)
+; CHECK-NEXT: (return)
+define void @sti32(i32 *%p, i32 %v) {
+ store i32 %v, i32* %p
+ ret void
+}
+
+; CHECK-LABEL: (func $sti64
+; CHECK-NEXT: (param i32) (param i64)
+; CHECK-NEXT: (setlocal @0 (argument 1))
+; CHECK-NEXT: (setlocal @1 (argument 0))
+; CHECK-NEXT: (store_i64 @1 @0)
+; CHECK-NEXT: (return)
+define void @sti64(i64 *%p, i64 %v) {
+ store i64 %v, i64* %p
+ ret void
+}
+
+; CHECK-LABEL: (func $stf32
+; CHECK-NEXT: (param i32) (param f32)
+; CHECK-NEXT: (setlocal @0 (argument 1))
+; CHECK-NEXT: (setlocal @1 (argument 0))
+; CHECK-NEXT: (store_f32 @1 @0)
+; CHECK-NEXT: (return)
+define void @stf32(float *%p, float %v) {
+ store float %v, float* %p
+ ret void
+}
+
+; CHECK-LABEL: (func $stf64
+; CHECK-NEXT: (param i32) (param f64)
+; CHECK-NEXT: (setlocal @0 (argument 1))
+; CHECK-NEXT: (setlocal @1 (argument 0))
+; CHECK-NEXT: (store_f64 @1 @0)
+; CHECK-NEXT: (return)
+define void @stf64(double *%p, double %v) {
+ store double %v, double* %p
+ ret void
+}
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