[WebAssembly] Reapply r252858, with svn add for the new file.

Switch to MC for instruction printing.

This encompasses several changes which are all interconnected:
 - Use the MC framework for printing almost all instructions.
 - AsmStrings are now live.
 - This introduces an indirection between LLVM vregs and WebAssembly registers,
   and a new pass, WebAssemblyRegNumbering, for computing a basic the mapping.
   This addresses some basic issues with argument registers and unused registers.
 - The way ARGUMENT instructions are handled no longer generates redundant
   get_local+set_local for every argument.

This also changes the assembly syntax somewhat; most notably, MC's printing
does not use sigils on label names, so those are no longer present, and
push/pop now have a sigil to keep them unambiguous.

The usage of set_local/get_local/$push/$pop will continue to evolve
significantly. This patch is just one step of a larger change.

llvm-svn: 252910

1 files changed, 34 insertions, 34 deletions

diff --git a/llvm/test/CodeGen/WebAssembly/load-store-i1.ll b/llvm/test/CodeGen/WebAssembly/load-store-i1.ll
index cb89e2c1772..ba14294b96a 100644
--- a/llvm/test/CodeGen/WebAssembly/load-store-i1.ll
+++ b/llvm/test/CodeGen/WebAssembly/load-store-i1.ll
@@ -6,9 +6,9 @@ target datalayout = "e-p:32:32-i64:64-n32:64-S128"
 target triple = "wasm32-unknown-unknown"
 
 ; CHECK-LABEL: load_u_i1_i32:
-; CHECK:      i32.load8_u push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK:      i32.load8_u $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define i32 @load_u_i1_i32(i1* %p) {
   %v = load i1, i1* %p
   %e = zext i1 %v to i32
@@ -16,15 +16,15 @@ define i32 @load_u_i1_i32(i1* %p) {
 }
 
 ; CHECK-LABEL: load_s_i1_i32:
-; CHECK:      i32.load8_u push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: i32.const push, 31{{$}}
-; CHECK-NEXT: set_local 3, pop{{$}}
-; CHECK-NEXT: shl push, (get_local 2), (get_local 3){{$}}
-; CHECK-NEXT: set_local 4, pop{{$}}
-; CHECK-NEXT: shr_s push, (get_local 4), (get_local 3){{$}}
-; CHECK-NEXT: set_local 5, pop{{$}}
-; CHECK-NEXT: return (get_local 5){{$}}
+; CHECK:      i32.load8_u $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: i32.const $push, 31{{$}}
+; CHECK-NEXT: set_local 2, $pop{{$}}
+; CHECK-NEXT: shl $push, (get_local 1), (get_local 2){{$}}
+; CHECK-NEXT: set_local 3, $pop{{$}}
+; CHECK-NEXT: shr_s $push, (get_local 3), (get_local 2){{$}}
+; CHECK-NEXT: set_local 4, $pop{{$}}
+; CHECK-NEXT: return (get_local 4){{$}}
 define i32 @load_s_i1_i32(i1* %p) {
   %v = load i1, i1* %p
   %e = sext i1 %v to i32
@@ -32,9 +32,9 @@ define i32 @load_s_i1_i32(i1* %p) {
 }
 
 ; CHECK-LABEL: load_u_i1_i64:
-; CHECK:      i64.load8_u push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: return (get_local 2){{$}}
+; CHECK:      i64.load8_u $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: return (get_local 1){{$}}
 define i64 @load_u_i1_i64(i1* %p) {
   %v = load i1, i1* %p
   %e = zext i1 %v to i64
@@ -42,15 +42,15 @@ define i64 @load_u_i1_i64(i1* %p) {
 }
 
 ; CHECK-LABEL: load_s_i1_i64:
-; CHECK:      i64.load8_u push, (get_local 1){{$}}
-; CHECK-NEXT: set_local 2, pop{{$}}
-; CHECK-NEXT: i64.const push, 63{{$}}
-; CHECK-NEXT: set_local 3, pop{{$}}
-; CHECK-NEXT: shl push, (get_local 2), (get_local 3){{$}}
-; CHECK-NEXT: set_local 4, pop{{$}}
-; CHECK-NEXT: shr_s push, (get_local 4), (get_local 3){{$}}
-; CHECK-NEXT: set_local 5, pop{{$}}
-; CHECK-NEXT: return (get_local 5){{$}}
+; CHECK:      i64.load8_u $push, (get_local 0){{$}}
+; CHECK-NEXT: set_local 1, $pop{{$}}
+; CHECK-NEXT: i64.const $push, 63{{$}}
+; CHECK-NEXT: set_local 2, $pop{{$}}
+; CHECK-NEXT: shl $push, (get_local 1), (get_local 2){{$}}
+; CHECK-NEXT: set_local 3, $pop{{$}}
+; CHECK-NEXT: shr_s $push, (get_local 3), (get_local 2){{$}}
+; CHECK-NEXT: set_local 4, $pop{{$}}
+; CHECK-NEXT: return (get_local 4){{$}}
 define i64 @load_s_i1_i64(i1* %p) {
   %v = load i1, i1* %p
   %e = sext i1 %v to i64
@@ -58,11 +58,11 @@ define i64 @load_s_i1_i64(i1* %p) {
 }
 
 ; CHECK-LABEL: store_i32_i1:
-; CHECK:      i32.const push, 1{{$}}
-; CHECK-NEXT: set_local 4, pop{{$}}
-; CHECK-NEXT: i32.and push, (get_local 3), (get_local 4){{$}}
-; CHECK-NEXT: set_local 5, pop{{$}}
-; CHECK-NEXT: i32.store8 (get_local 2), (get_local 5){{$}}
+; CHECK:      i32.const $push, 1{{$}}
+; CHECK-NEXT: set_local 2, $pop{{$}}
+; CHECK-NEXT: i32.and $push, (get_local 1), (get_local 2){{$}}
+; CHECK-NEXT: set_local 3, $pop{{$}}
+; CHECK-NEXT: i32.store8 (get_local 0), (get_local 3){{$}}
 define void @store_i32_i1(i1* %p, i32 %v) {
   %t = trunc i32 %v to i1
   store i1 %t, i1* %p
@@ -70,11 +70,11 @@ define void @store_i32_i1(i1* %p, i32 %v) {
 }
 
 ; CHECK-LABEL: store_i64_i1:
-; CHECK:      i64.const push, 1{{$}}
-; CHECK-NEXT: set_local 4, pop{{$}}
-; CHECK-NEXT: i64.and push, (get_local 3), (get_local 4){{$}}
-; CHECK-NEXT: set_local 5, pop{{$}}
-; CHECK-NEXT: i64.store8 (get_local 2), (get_local 5){{$}}
+; CHECK:      i64.const $push, 1{{$}}
+; CHECK-NEXT: set_local 2, $pop{{$}}
+; CHECK-NEXT: i64.and $push, (get_local 1), (get_local 2){{$}}
+; CHECK-NEXT: set_local 3, $pop{{$}}
+; CHECK-NEXT: i64.store8 (get_local 0), (get_local 3){{$}}
 define void @store_i64_i1(i1* %p, i64 %v) {
   %t = trunc i64 %v to i1
   store i1 %t, i1* %p