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[WebAssembly] Stackify code emitted by eliminateFrameIndex 

llvm-svn: 261685
This commit is contained in:
Derek Schuff 2016-02-23 21:25:17 +00:00
parent 120f6301ed
commit b21570cc1d
4 changed files with 28 additions and 24 deletions
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10
llvm/lib/Target/WebAssembly/WebAssemblyRegisterInfo.cpp
View File

@ -84,14 +84,18 @@ void WebAssemblyRegisterInfo::eliminateFrameIndex(
unsigned FIRegOperand = WebAssembly::SP32;
if (FrameOffset) {
FIRegOperand = MRI.createVirtualRegister(&WebAssembly::I32RegClass);
auto *WFI = MF.getInfo<WebAssemblyFunctionInfo>();
unsigned OffsetOp = MRI.createVirtualRegister(&WebAssembly::I32RegClass);
BuildMI(MBB, MI, MI.getDebugLoc(), TII->get(WebAssembly::CONST_I32),
FIRegOperand)
OffsetOp)
.addImm(FrameOffset);
WFI->stackifyVReg(OffsetOp);
FIRegOperand = MRI.createVirtualRegister(&WebAssembly::I32RegClass);
BuildMI(MBB, MI, MI.getDebugLoc(), TII->get(WebAssembly::ADD_I32),
FIRegOperand)
.addReg(WebAssembly::SP32)
.addReg(FIRegOperand);
.addReg(OffsetOp);
WFI->stackifyVReg(FIRegOperand);
}
MI.getOperand(FIOperandNum).ChangeToRegister(FIRegOperand, /*IsDef=*/false);
}

12
llvm/test/CodeGen/WebAssembly/byval.ll
View File

@ -35,9 +35,9 @@ define void @byval_arg(%SmallStruct* %ptr) {
; CHECK-NEXT: i32.load $push[[L4:.+]]=, 0($0)
; CHECK-NEXT: i32.store {{.*}}=, 12([[SP]]), $pop[[L4]]
; Pass a pointer to the stack slot to the function
; CHECK-NEXT: i32.const [[L5:.+]]=, 12
; CHECK-NEXT: i32.add [[ARG:.+]]=, [[SP]], [[L5]]
; CHECK-NEXT: call ext_byval_func@FUNCTION, [[L5]]
; CHECK-NEXT: i32.const $push[[L5:.+]]=, 12
; CHECK-NEXT: i32.add $push[[ARG:.+]]=, [[SP]], $pop[[L5]]
; CHECK-NEXT: call ext_byval_func@FUNCTION, $pop[[ARG]]
call void @ext_byval_func(%SmallStruct* byval %ptr)
; Restore the stack
; CHECK-NEXT: i32.const $push[[L6:.+]]=, 16
@ -58,9 +58,9 @@ define void @byval_arg_align8(%SmallStruct* %ptr) {
; CHECK: i32.load $push[[L4:.+]]=, 0($0):p2align=3
; CHECK-NEXT: i32.store {{.*}}=, 8([[SP]]):p2align=3, $pop[[L4]]
; Pass a pointer to the stack slot to the function
; CHECK-NEXT: i32.const [[L5:.+]]=, 8
; CHECK-NEXT: i32.add [[ARG:.+]]=, [[SP]], [[L5]]
; CHECK-NEXT: call ext_byval_func_align8@FUNCTION, [[L5]]
; CHECK-NEXT: i32.const $push[[L5:.+]]=, 8
; CHECK-NEXT: i32.add $push[[ARG:.+]]=, [[SP]], $pop[[L5]]
; CHECK-NEXT: call ext_byval_func_align8@FUNCTION, $pop[[ARG]]
call void @ext_byval_func_align8(%SmallStruct* byval align 8 %ptr)
ret void
}

4
llvm/test/CodeGen/WebAssembly/mem-intrinsics.ll
View File

@ -61,8 +61,8 @@ define void @set_no(i8* %dst, i8 %src, i32 %len) {
; CHECK-LABEL: frame_index:
; CHECK: i32.call $discard=, memset@FUNCTION, $0, $pop1, $pop0{{$}}
; CHECK: i32.call $discard=, memset@FUNCTION, $1, $pop3, $pop2{{$}}
; CHECK: i32.call $discard=, memset@FUNCTION, $pop11, $pop1, $pop0{{$}}
; CHECK: i32.call $discard=, memset@FUNCTION, $0, $pop3, $pop2{{$}}
; CHECK: return{{$}}
define void @frame_index() {
entry:

26
llvm/test/CodeGen/WebAssembly/userstack.ll
View File

@ -49,7 +49,7 @@ define void @alloca3264() {
}
; CHECK-LABEL: allocarray:
; CHECK: .local i32, i32{{$}}
; CHECK: .local i32{{$}}
define void @allocarray() {
; CHECK: i32.const $push[[L1:.+]]=, __stack_pointer
; CHECK-NEXT: i32.load $push[[L2:.+]]=, 0($pop[[L1]])
@ -60,9 +60,9 @@ define void @allocarray() {
%r = alloca [33 x i32]
; CHECK-NEXT: i32.const $push[[L4:.+]]=, 12
; CHECK-NEXT: i32.const [[L5:.+]]=, 12
; CHECK-NEXT: i32.add [[L5]]=, [[SP]], [[L5]]
; CHECK-NEXT: i32.add $push[[L6:.+]]=, [[L5]], $pop[[L4]]
; CHECK-NEXT: i32.const $push[[L5:.+]]=, 12
; CHECK-NEXT: i32.add $push[[L7:.+]]=, [[SP]], $pop[[L5]]
; CHECK-NEXT: i32.add $push[[L6:.+]]=, $pop[[L7]], $pop[[L4]]
; CHECK-NEXT: i32.const $push[[L9:.+]]=, 1{{$}}
; CHECK-NEXT: i32.store $push[[L10:.+]]=, 12([[SP]]), $pop[[L9]]{{$}}
; CHECK-NEXT: i32.store $discard=, 0($pop3), $pop[[L10]]{{$}}
@ -86,18 +86,18 @@ define void @non_mem_use(i8** %addr) {
%r = alloca i64
%r2 = alloca i64
; %r is at SP+8
; CHECK: i32.const [[OFF:.+]]=, 8
; CHECK-NEXT: i32.add [[ARG1:.+]]=, [[SP]], [[OFF]]
; CHECK-NEXT: call ext_func@FUNCTION, [[ARG1]]
; CHECK: i32.const $push[[OFF:.+]]=, 8
; CHECK-NEXT: i32.add $push[[ARG1:.+]]=, [[SP]], $pop[[OFF]]
; CHECK-NEXT: call ext_func@FUNCTION, $pop[[ARG1]]
call void @ext_func(i64* %r)
; %r2 is at SP+0, no add needed
; CHECK-NEXT: call ext_func@FUNCTION, [[SP]]
call void @ext_func(i64* %r2)
; Use as a value, but in a store
; %buf is at SP+16
; CHECK: i32.const [[OFF:.+]]=, 16
; CHECK-NEXT: i32.add [[VAL:.+]]=, [[SP]], [[OFF]]
; CHECK-NEXT: i32.store {{.*}}=, 0($0), [[VAL]]
; CHECK: i32.const $push[[OFF:.+]]=, 16
; CHECK-NEXT: i32.add $push[[VAL:.+]]=, [[SP]], $pop[[OFF]]
; CHECK-NEXT: i32.store {{.*}}=, 0($0), $pop[[VAL]]
%gep = getelementptr inbounds [27 x i8], [27 x i8]* %buf, i32 0, i32 0
store i8* %gep, i8** %addr
ret void
@ -198,9 +198,9 @@ entry:
; CHECK: i32.const $push[[L1:.+]]=, 16
; CHECK-NEXT: i32.sub [[SP:.+]]=, {{.+}}, $pop[[L1]]
%addr = alloca i32
; CHECK: i32.const [[OFF:.+]]=, 12
; CHECK-NEXT: i32.add [[ADDR:.+]]=, [[SP]], [[OFF]]
; CHECK-NEXT: copy_local [[COPY:.+]]=, [[ADDR]]
; CHECK: i32.const $push[[OFF:.+]]=, 12
; CHECK-NEXT: i32.add $push[[ADDR:.+]]=, [[SP]], $pop[[OFF]]
; CHECK-NEXT: copy_local [[COPY:.+]]=, $pop[[ADDR]]
br label %body
body:
%a = phi i32* [%addr, %entry], [%b, %body]