derek.holloway
7502bf64a4
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57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
// RUN: %clang_cc1 -Wall -Werror -triple thumbv8-linux-gnueabi -fno-signed-char -emit-llvm -o - %s | FileCheck %s
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// RUN: %clang_cc1 -Wall -Werror -triple arm64-apple-ios7.0 -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-ARM64
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bool b;
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// CHECK-LABEL: @_Z10test_ldrexv()
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// CHECK: call i32 @llvm.arm.ldrex.p0(ptr elementtype(i8) @b)
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// CHECK-ARM64-LABEL: @_Z10test_ldrexv()
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// CHECK-ARM64: call i64 @llvm.aarch64.ldxr.p0(ptr elementtype(i8) @b)
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void test_ldrex() {
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b = __builtin_arm_ldrex(&b);
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}
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// CHECK-LABEL: @_Z10tset_strexv()
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// CHECK: %{{.*}} = call i32 @llvm.arm.strex.p0(i32 1, ptr elementtype(i8) @b)
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// CHECK-ARM64-LABEL: @_Z10tset_strexv()
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// CHECK-ARM64: %{{.*}} = call i32 @llvm.aarch64.stxr.p0(i64 1, ptr elementtype(i8) @b)
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void tset_strex() {
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__builtin_arm_strex(true, &b);
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}
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#ifdef __arm__
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// ARM exclusive atomic builtins
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long long c;
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// CHECK-LABEL: @_Z11test_ldrexdv()
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// CHECK: [[STRUCTRES:%.*]] = call { i32, i32 } @llvm.arm.ldrexd(ptr @c)
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// CHECK: [[RESHI:%.*]] = extractvalue { i32, i32 } [[STRUCTRES]], 1
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// CHECK: [[RESLO:%.*]] = extractvalue { i32, i32 } [[STRUCTRES]], 0
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// CHECK: [[RESHI64:%.*]] = zext i32 [[RESHI]] to i64
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// CHECK: [[RESLO64:%.*]] = zext i32 [[RESLO]] to i64
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// CHECK: [[RESHIHI:%.*]] = shl nuw i64 [[RESHI64]], 32
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// CHECK: [[INTRES:%.*]] = or i64 [[RESHIHI]], [[RESLO64]]
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// CHECK: store i64 [[INTRES]], ptr @c, align 8
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void test_ldrexd() {
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c = __builtin_arm_ldrexd(&c);
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}
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// CHECK-LABEL: @_Z11tset_strexdv()
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// CHECK: store i64 42, ptr [[TMP:%.*]], align 8
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// CHECK: [[LOHI:%.*]] = load { i32, i32 }, ptr [[TMP]]
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// CHECK: [[LO:%.*]] = extractvalue { i32, i32 } [[LOHI]], 0
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// CHECK: [[HI:%.*]] = extractvalue { i32, i32 } [[LOHI]], 1
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// CHECK: %{{.*}} = call i32 @llvm.arm.strexd(i32 [[LO]], i32 [[HI]], ptr @c)
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void tset_strexd() {
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__builtin_arm_strexd(42, &c);
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}
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#endif
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