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
llvm-svn: 246500

1 files changed, 86 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/WebAssembly/load-ext.ll b/llvm/test/CodeGen/WebAssembly/load-ext.ll
new file mode 100644
index 00000000000..b673cfb1919
--- /dev/null
+++ b/llvm/test/CodeGen/WebAssembly/load-ext.ll
@@ -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
+}