[WebAssembly] Implement unaligned loads and stores.
Differential Revision: http://reviews.llvm.org/D16534
llvm-svn: 258779
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyFrameLowering.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyFrameLowering.cpp
index 43d9b53..5ea532e 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyFrameLowering.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyFrameLowering.cpp
@@ -84,6 +84,7 @@
BuildMI(MBB, InsertPt, DL, TII->get(WebAssembly::LOAD_I32), SPReg)
.addImm(0)
.addReg(SPReg)
+ .addImm(2) // p2align
.addMemOperand(LoadMMO);
// Add/Subtract the frame size
unsigned OffsetReg = MRI.createVirtualRegister(&WebAssembly::I32RegClass);
@@ -102,6 +103,7 @@
BuildMI(MBB, InsertPt, DL, TII->get(WebAssembly::STORE_I32), WebAssembly::SP32)
.addImm(0)
.addReg(OffsetReg)
+ .addImm(2) // p2align
.addReg(WebAssembly::SP32)
.addMemOperand(MMO);
}
@@ -169,6 +171,7 @@
BuildMI(MBB, InsertPt, DL, TII->get(WebAssembly::STORE_I32), WebAssembly::SP32)
.addImm(0)
.addReg(OffsetReg)
+ .addImm(2) // p2align
.addReg(WebAssembly::SP32)
.addMemOperand(MMO);
}