[SPARC] Allows inlining of atomics for Sparc32 with appropriate store barrier.

The final change is required to extend the back-end's AtomicExpandPass that was implemented for Sparc (64 bit) and later extended for Sparc (32 bit).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@274012 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 56a19a032487406a5750353572f8330fe2094f16..91cc9867aff76d53e48375e4cb2e6803861c3b1a 100644 (file)
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -6601,6 +6601,7 @@ public:
       PtrDiffType = SignedLong;
       break;
     }
+    MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
   }
 
   void getTargetDefines(const LangOptions &Opts,

diff --git a/test/CodeGen/atomics-inlining.c b/test/CodeGen/atomics-inlining.c
index 23a79a2d28f9e41d2684a6685a26e8df86cd212a..4974f22e3a47674d9e39b7093fa290fcf8896d8e 100644 (file)
--- a/test/CodeGen/atomics-inlining.c
+++ b/test/CodeGen/atomics-inlining.c
@@ -3,6 +3,7 @@
 // RUN: %clang_cc1 -triple powerpc64-linux-gnu -emit-llvm %s -o - | FileCheck %s -check-prefix=PPC64
 // RUN: %clang_cc1 -triple mipsel-linux-gnu -emit-llvm %s -o - | FileCheck %s -check-prefix=MIPS32
 // RUN: %clang_cc1 -triple mips64el-linux-gnu -emit-llvm %s -o - | FileCheck %s -check-prefix=MIPS64
+// RUN: %clang_cc1 -triple sparc-unknown-eabi -emit-llvm %s -o - | FileCheck %s -check-prefix=SPARC
 
 unsigned char c1, c2;
 unsigned short s1, s2;
@@ -90,4 +91,16 @@ void test1(void) {
 // MIPS64: store atomic i64 {{.*}}, i64* @ll1 seq_cst
 // MIPS64: call void @__atomic_load(i64 zeroext 100, i8* getelementptr inbounds ([100 x i8], [100 x i8]* @a1, i32 0, i32 0)
 // MIPS64: call void @__atomic_store(i64 zeroext 100, i8* getelementptr inbounds ([100 x i8], [100 x i8]* @a1, i32 0, i32 0), i8* getelementptr inbounds ([100 x i8], [100 x i8]* @a2, i32 0, i32 0)
+
+// SPARC-LABEL: define void @test1
+// SPARC: = load atomic i8, i8* @c1 seq_cst
+// SPARC: store atomic i8 {{.*}}, i8* @c1 seq_cst
+// SPARC: = load atomic i16, i16* @s1 seq_cst
+// SPARC: store atomic i16 {{.*}}, i16* @s1 seq_cst
+// SPARC: = load atomic i32, i32* @i1 seq_cst
+// SPARC: store atomic i32 {{.*}}, i32* @i1 seq_cst
+// SPARC: = load atomic i64, i64* @ll1 seq_cst
+// SPARC: store atomic i64 {{.*}}, i64* @ll1 seq_cst
+// SPARC: call void @__atomic_load(i32 100, i8* getelementptr inbounds ([100 x i8], [100 x i8]* @a1, i32 0, i32 0), i8* getelementptr inbounds ([100 x i8], [100 x i8]* @a2, i32 0, i32 0)
+// SPARC: call void @__atomic_store(i32 100, i8* getelementptr inbounds ([100 x i8], [100 x i8]* @a1, i32 0, i32 0), i8* getelementptr inbounds ([100 x i8], [100 x i8]* @a2, i32 0, i32 0)
 }