62 lines
2 KiB
C
62 lines
2 KiB
C
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// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -ftrapv %s -emit-llvm -o - | FileCheck %s
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unsigned int ui, uj, uk;
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int i, j, k;
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// CHECK-LABEL: define void @test0()
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void test0() {
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// -ftrapv doesn't affect unsigned arithmetic.
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// CHECK: [[T1:%.*]] = load i32* @uj
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// CHECK-NEXT: [[T2:%.*]] = load i32* @uk
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// CHECK-NEXT: [[T3:%.*]] = add i32 [[T1]], [[T2]]
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// CHECK-NEXT: store i32 [[T3]], i32* @ui
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ui = uj + uk;
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// CHECK: [[T1:%.*]] = load i32* @j
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// CHECK-NEXT: [[T2:%.*]] = load i32* @k
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// CHECK-NEXT: [[T3:%.*]] = call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 [[T1]], i32 [[T2]])
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// CHECK-NEXT: [[T4:%.*]] = extractvalue { i32, i1 } [[T3]], 0
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// CHECK-NEXT: [[T5:%.*]] = extractvalue { i32, i1 } [[T3]], 1
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// CHECK-NEXT: [[T6:%.*]] = xor i1 [[T5]], true
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// CHECK-NEXT: br i1 [[T6]]
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// CHECK: call void @llvm.trap()
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i = j + k;
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}
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// CHECK-LABEL: define void @test1()
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void test1() {
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extern void opaque(int);
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opaque(i++);
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// CHECK: [[T1:%.*]] = load i32* @i
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// CHECK-NEXT: [[T2:%.*]] = call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 [[T1]], i32 1)
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// CHECK-NEXT: [[T3:%.*]] = extractvalue { i32, i1 } [[T2]], 0
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// CHECK-NEXT: [[T4:%.*]] = extractvalue { i32, i1 } [[T2]], 1
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// CHECK-NEXT: [[T5:%.*]] = xor i1 [[T4]], true
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// CHECK-NEXT: br i1 [[T5]]
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// CHECK: call void @llvm.trap()
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}
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// CHECK-LABEL: define void @test2()
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void test2() {
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extern void opaque(int);
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opaque(++i);
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// CHECK: [[T1:%.*]] = load i32* @i
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// CHECK-NEXT: [[T2:%.*]] = call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 [[T1]], i32 1)
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// CHECK-NEXT: [[T3:%.*]] = extractvalue { i32, i1 } [[T2]], 0
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// CHECK-NEXT: [[T4:%.*]] = extractvalue { i32, i1 } [[T2]], 1
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// CHECK-NEXT: [[T5:%.*]] = xor i1 [[T4]], true
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// CHECK-NEXT: br i1 [[T5]]
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// CHECK: call void @llvm.trap()
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}
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// CHECK-LABEL: define void @test3(
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void test3(int a, int b, float c, float d) {
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// CHECK-NOT: @llvm.trap
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(void)(a / b);
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(void)(a % b);
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(void)(c / d);
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// CHECK: }
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}
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