Don't fast-isel for atomic load/store; some cases require extra handling missing from fast-isel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139044 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMFastISel.cpp b/lib/Target/ARM/ARMFastISel.cpp
index 390cd92..79c1391 100644
--- a/lib/Target/ARM/ARMFastISel.cpp
+++ b/lib/Target/ARM/ARMFastISel.cpp
@@ -946,6 +946,10 @@
}
bool ARMFastISel::SelectLoad(const Instruction *I) {
+ // Atomic loads need special handling.
+ if (cast<LoadInst>(I)->isAtomic())
+ return false;
+
// Verify we have a legal type before going any further.
MVT VT;
if (!isLoadTypeLegal(I->getType(), VT))
@@ -1008,6 +1012,10 @@
Value *Op0 = I->getOperand(0);
unsigned SrcReg = 0;
+ // Atomic stores need special handling.
+ if (cast<StoreInst>(I)->isAtomic())
+ return false;
+
// Verify we have a legal type before going any further.
MVT VT;
if (!isLoadTypeLegal(I->getOperand(0)->getType(), VT))
diff --git a/lib/Target/X86/X86FastISel.cpp b/lib/Target/X86/X86FastISel.cpp
index f5db6d2..452b215 100644
--- a/lib/Target/X86/X86FastISel.cpp
+++ b/lib/Target/X86/X86FastISel.cpp
@@ -658,6 +658,10 @@
/// X86SelectStore - Select and emit code to implement store instructions.
bool X86FastISel::X86SelectStore(const Instruction *I) {
+ // Atomic stores need special handling.
+ if (cast<StoreInst>(I)->isAtomic())
+ return false;
+
MVT VT;
if (!isTypeLegal(I->getOperand(0)->getType(), VT, /*AllowI1=*/true))
return false;
@@ -780,6 +784,10 @@
/// X86SelectLoad - Select and emit code to implement load instructions.
///
bool X86FastISel::X86SelectLoad(const Instruction *I) {
+ // Atomic loads need special handling.
+ if (cast<LoadInst>(I)->isAtomic())
+ return false;
+
MVT VT;
if (!isTypeLegal(I->getType(), VT, /*AllowI1=*/true))
return false;
diff --git a/test/CodeGen/ARM/atomic-load-store.ll b/test/CodeGen/ARM/atomic-load-store.ll
index 1625e53..81c8284 100644
--- a/test/CodeGen/ARM/atomic-load-store.ll
+++ b/test/CodeGen/ARM/atomic-load-store.ll
@@ -1,4 +1,5 @@
; RUN: llc < %s -mtriple=armv7-apple-ios | FileCheck %s -check-prefix=ARM
+; RUN: llc < %s -mtriple=armv7-apple-ios -O0 | FileCheck %s -check-prefix=ARM
; RUN: llc < %s -mtriple=thumbv7-apple-ios | FileCheck %s -check-prefix=THUMBTWO
; RUN: llc < %s -mtriple=thumbv6-apple-ios | FileCheck %s -check-prefix=THUMBONE
diff --git a/test/CodeGen/X86/atomic-load-store.ll b/test/CodeGen/X86/atomic-load-store.ll
index 7738ace..5430a50 100644
--- a/test/CodeGen/X86/atomic-load-store.ll
+++ b/test/CodeGen/X86/atomic-load-store.ll
@@ -1,4 +1,5 @@
; RUN: llc < %s -mtriple=x86_64-apple-macosx10.7.0 | FileCheck %s
+; RUN: llc < %s -mtriple=x86_64-apple-macosx10.7.0 -O0 | FileCheck %s
define void @test1(i32* %ptr, i32 %val1) {
; CHECK: test1
