Rebased PNaCl localmods in LLVM to 223109

test/Transforms/NaCl/atomic/volatile.ll

+; RUN: opt -nacl-rewrite-atomics -S < %s | FileCheck %s
+;
+; Validate that volatile loads/stores get rewritten into NaCl atomic builtins.
+; The memory ordering for volatile loads/stores could technically be constrained
+; to sequential consistency (enum value 6), or left as relaxed.
+
+target datalayout = "p:32:32:32"
+
+; CHECK-LABEL: @test_volatile_load_i8
+define zeroext i8 @test_volatile_load_i8(i8* %ptr) {
+  ; CHECK-NEXT: %res = call i8 @llvm.nacl.atomic.load.i8(i8* %ptr, i32 6)
+  %res = load volatile i8* %ptr, align 1
+  ret i8 %res  ; CHECK-NEXT: ret i8 %res
+}
+
+; CHECK-LABEL: @test_volatile_store_i8
+define void @test_volatile_store_i8(i8* %ptr, i8 zeroext %value) {
+  ; CHECK-NEXT: call void @llvm.nacl.atomic.store.i8(i8 %value, i8* %ptr, i32 6)
+  store volatile i8 %value, i8* %ptr, align 1
+  ret void  ; CHECK-NEXT: ret void
+}
+
+; CHECK-LABEL: @test_volatile_load_i16
+define zeroext i16 @test_volatile_load_i16(i16* %ptr) {
+  ; CHECK-NEXT: %res = call i16 @llvm.nacl.atomic.load.i16(i16* %ptr, i32 6)
+  %res = load volatile i16* %ptr, align 2
+  ret i16 %res  ; CHECK-NEXT: ret i16 %res
+}
+
+; CHECK-LABEL: @test_volatile_store_i16
+define void @test_volatile_store_i16(i16* %ptr, i16 zeroext %value) {
+  ; CHECK-NEXT: call void @llvm.nacl.atomic.store.i16(i16 %value, i16* %ptr, i32 6)
+  store volatile i16 %value, i16* %ptr, align 2
+  ret void  ; CHECK-NEXT: ret void
+}
+
+; CHECK-LABEL: @test_volatile_load_i32
+define i32 @test_volatile_load_i32(i32* %ptr) {
+  ; CHECK-NEXT: %res = call i32 @llvm.nacl.atomic.load.i32(i32* %ptr, i32 6)
+  %res = load volatile i32* %ptr, align 4
+  ret i32 %res  ; CHECK-NEXT: ret i32 %res
+}
+
+; CHECK-LABEL: @test_volatile_store_i32
+define void @test_volatile_store_i32(i32* %ptr, i32 %value) {
+  ; CHECK-NEXT: call void @llvm.nacl.atomic.store.i32(i32 %value, i32* %ptr, i32 6)
+  store volatile i32 %value, i32* %ptr, align 4
+  ret void  ; CHECK-NEXT: ret void
+}
+
+; CHECK-LABEL: @test_volatile_load_i64
+define i64 @test_volatile_load_i64(i64* %ptr) {
+  ; CHECK-NEXT: %res = call i64 @llvm.nacl.atomic.load.i64(i64* %ptr, i32 6)
+  %res = load volatile i64* %ptr, align 8
+  ret i64 %res  ; CHECK-NEXT: ret i64 %res
+}
+
+; CHECK-LABEL: @test_volatile_store_i64
+define void @test_volatile_store_i64(i64* %ptr, i64 %value) {
+  ; CHECK-NEXT: call void @llvm.nacl.atomic.store.i64(i64 %value, i64* %ptr, i32 6)
+  store volatile i64 %value, i64* %ptr, align 8
+  ret void  ; CHECK-NEXT: ret void
+}
+
+; CHECK-LABEL: @test_volatile_load_float
+define float @test_volatile_load_float(float* %ptr) {
+  ; CHECK-NEXT: %ptr.cast = bitcast float* %ptr to i32*
+  ; CHECK-NEXT: %res = call i32 @llvm.nacl.atomic.load.i32(i32* %ptr.cast, i32 6)
+  ; CHECK-NEXT: %res.cast = bitcast i32 %res to float
+  %res = load volatile float* %ptr, align 4
+  ret float %res  ; CHECK-NEXT: ret float %res.cast
+}
+
+; CHECK-LABEL: @test_volatile_store_float
+define void @test_volatile_store_float(float* %ptr, float %value) {
+  ; CHECK-NEXT: %ptr.cast = bitcast float* %ptr to i32*
+  ; CHECK-NEXT: %value.cast = bitcast float %value to i32
+  ; CHECK-NEXT: call void @llvm.nacl.atomic.store.i32(i32 %value.cast, i32* %ptr.cast, i32 6)
+  store volatile float %value, float* %ptr, align 4
+  ret void  ; CHECK-NEXT: ret void
+}
+
+; CHECK-LABEL: @test_volatile_load_double
+define double @test_volatile_load_double(double* %ptr) {
+  ; CHECK-NEXT: %ptr.cast = bitcast double* %ptr to i64*
+  ; CHECK-NEXT: %res = call i64 @llvm.nacl.atomic.load.i64(i64* %ptr.cast, i32 6)
+  ; CHECK-NEXT: %res.cast = bitcast i64 %res to double
+  %res = load volatile double* %ptr, align 8
+  ret double %res  ; CHECK-NEXT: ret double %res.cast
+}
+
+; CHECK-LABEL: @test_volatile_store_double
+define void @test_volatile_store_double(double* %ptr, double %value) {
+  ; CHECK-NEXT: %ptr.cast = bitcast double* %ptr to i64*
+  ; CHECK-NEXT: %value.cast = bitcast double %value to i64
+  ; CHECK-NEXT: call void @llvm.nacl.atomic.store.i64(i64 %value.cast, i64* %ptr.cast, i32 6)
+  store volatile double %value, double* %ptr, align 8
+  ret void  ; CHECK-NEXT: ret void
+}
+
+; CHECK-LABEL: @test_volatile_load_i32_pointer
+define i32* @test_volatile_load_i32_pointer(i32** %ptr) {
+  ; CHECK-NEXT: %ptr.cast = bitcast i32** %ptr to i32*
+  ; CHECK-NEXT: %res = call i32 @llvm.nacl.atomic.load.i32(i32* %ptr.cast, i32 6)
+  ; CHECK-NEXT: %res.cast = inttoptr i32 %res to i32*
+  %res = load volatile i32** %ptr, align 4
+  ret i32* %res  ; CHECK-NEXT: ret i32* %res.cast
+}
+
+; CHECK-LABEL: @test_volatile_store_i32_pointer
+define void @test_volatile_store_i32_pointer(i32** %ptr, i32* %value) {
+  ; CHECK-NEXT: %ptr.cast = bitcast i32** %ptr to i32*
+  ; CHECK-NEXT: %value.cast = ptrtoint i32* %value to i32
+  ; CHECK-NEXT: call void @llvm.nacl.atomic.store.i32(i32 %value.cast, i32* %ptr.cast, i32 6)
+  store volatile i32* %value, i32** %ptr, align 4
+  ret void  ; CHECK-NEXT: ret void
+}
+
+; CHECK-LABEL: @test_volatile_load_double_pointer
+define double* @test_volatile_load_double_pointer(double** %ptr) {
+  ; CHECK-NEXT: %ptr.cast = bitcast double** %ptr to i32*
+  ; CHECK-NEXT: %res = call i32 @llvm.nacl.atomic.load.i32(i32* %ptr.cast, i32 6)
+  ; CHECK-NEXT: %res.cast = inttoptr i32 %res to double*
+  %res = load volatile double** %ptr, align 4
+  ret double* %res  ; CHECK-NEXT: ret double* %res.cast
+}
+
+; CHECK-LABEL: @test_volatile_store_double_pointer
+define void @test_volatile_store_double_pointer(double** %ptr, double* %value) {
+  ; CHECK-NEXT: %ptr.cast = bitcast double** %ptr to i32*
+  ; CHECK-NEXT: %value.cast = ptrtoint double* %value to i32
+  ; CHECK-NEXT: call void @llvm.nacl.atomic.store.i32(i32 %value.cast, i32* %ptr.cast, i32 6)
+  store volatile double* %value, double** %ptr, align 4
+  ret void  ; CHECK-NEXT: ret void
+}
+
+; CHECK-LABEL: @test_volatile_load_v4i8
+define <4 x i8> @test_volatile_load_v4i8(<4 x i8>* %ptr) {
+  ; CHECK-NEXT: %ptr.cast = bitcast <4 x i8>* %ptr to i32*
+  ; CHECK-NEXT: %res = call i32 @llvm.nacl.atomic.load.i32(i32* %ptr.cast, i32 6)
+  ; CHECK-NEXT: %res.cast = bitcast i32 %res to <4 x i8>
+  %res = load volatile <4 x i8>* %ptr, align 8
+  ret <4 x i8> %res  ; CHECK-NEXT: ret <4 x i8> %res.cast
+}
+
+; CHECK-LABEL: @test_volatile_store_v4i8
+define void @test_volatile_store_v4i8(<4 x i8>* %ptr, <4 x i8> %value) {
+  ; CHECK-NEXT: %ptr.cast = bitcast <4 x i8>* %ptr to i32*
+  ; CHECK-NEXT: %value.cast = bitcast <4 x i8> %value to i32
+  ; CHECK-NEXT: call void @llvm.nacl.atomic.store.i32(i32 %value.cast, i32* %ptr.cast, i32 6)
+  store volatile <4 x i8> %value, <4 x i8>* %ptr, align 8
+  ret void  ; CHECK-NEXT: ret void
+}
+
+; CHECK-LABEL: @test_volatile_load_v4i16
+define <4 x i16> @test_volatile_load_v4i16(<4 x i16>* %ptr) {
+  ; CHECK-NEXT: %ptr.cast = bitcast <4 x i16>* %ptr to i64*
+  ; CHECK-NEXT: %res = call i64 @llvm.nacl.atomic.load.i64(i64* %ptr.cast, i32 6)
+  ; CHECK-NEXT: %res.cast = bitcast i64 %res to <4 x i16>
+  %res = load volatile <4 x i16>* %ptr, align 8
+  ret <4 x i16> %res  ; CHECK-NEXT: ret <4 x i16> %res.cast
+}
+
+; CHECK-LABEL: @test_volatile_store_v4i16
+define void @test_volatile_store_v4i16(<4 x i16>* %ptr, <4 x i16> %value) {
+  ; CHECK-NEXT: %ptr.cast = bitcast <4 x i16>* %ptr to i64*
+  ; CHECK-NEXT: %value.cast = bitcast <4 x i16> %value to i64
+  ; CHECK-NEXT: call void @llvm.nacl.atomic.store.i64(i64 %value.cast, i64* %ptr.cast, i32 6)
+  store volatile <4 x i16> %value, <4 x i16>* %ptr, align 8
+  ret void  ; CHECK-NEXT: ret void
+}