107 lines
3.5 KiB
C
107 lines
3.5 KiB
C
// RUN: %clang_cc1 -triple x86_64-apple-darwin %s -emit-llvm -o - | FileCheck %s --check-prefix=DEFAULT
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// RUN: %clang_cc1 -triple x86_64-apple-darwin %s -emit-llvm -o - -fwrapv | FileCheck %s --check-prefix=WRAPV
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// RUN: %clang_cc1 -triple x86_64-apple-darwin %s -emit-llvm -o - -ftrapv | FileCheck %s --check-prefix=TRAPV
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// RUN: %clang_cc1 -triple x86_64-apple-darwin %s -emit-llvm -o - -fsanitize=signed-integer-overflow | FileCheck %s --check-prefix=CATCH_UB
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// RUN: %clang_cc1 -triple x86_64-apple-darwin %s -emit-llvm -o - -ftrapv -ftrapv-handler foo | FileCheck %s --check-prefix=TRAPV_HANDLER
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// Tests for signed integer overflow stuff.
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// rdar://7432000 rdar://7221421
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void test1() {
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// DEFAULT-LABEL: define{{.*}} void @test1
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// WRAPV-LABEL: define{{.*}} void @test1
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// TRAPV-LABEL: define{{.*}} void @test1
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extern volatile int f11G, a, b;
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// DEFAULT: add nsw i32
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// WRAPV: add i32
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// TRAPV: llvm.sadd.with.overflow.i32
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// CATCH_UB: llvm.sadd.with.overflow.i32
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// TRAPV_HANDLER: foo(
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f11G = a + b;
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// DEFAULT: sub nsw i32
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// WRAPV: sub i32
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// TRAPV: llvm.ssub.with.overflow.i32
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// CATCH_UB: llvm.ssub.with.overflow.i32
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// TRAPV_HANDLER: foo(
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f11G = a - b;
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// DEFAULT: mul nsw i32
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// WRAPV: mul i32
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// TRAPV: llvm.smul.with.overflow.i32
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// CATCH_UB: llvm.smul.with.overflow.i32
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// TRAPV_HANDLER: foo(
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f11G = a * b;
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// DEFAULT: sub nsw i32 0,
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// WRAPV: sub i32 0,
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// TRAPV: llvm.ssub.with.overflow.i32(i32 0
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// CATCH_UB: llvm.ssub.with.overflow.i32(i32 0
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// TRAPV_HANDLER: foo(
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f11G = -a;
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// PR7426 - Overflow checking for increments.
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// DEFAULT: add nsw i32 {{.*}}, 1
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// WRAPV: add i32 {{.*}}, 1
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// TRAPV: llvm.sadd.with.overflow.i32({{.*}}, i32 1)
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// CATCH_UB: llvm.sadd.with.overflow.i32({{.*}}, i32 1)
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// TRAPV_HANDLER: foo(
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++a;
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// DEFAULT: add nsw i32 {{.*}}, -1
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// WRAPV: add i32 {{.*}}, -1
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// TRAPV: llvm.ssub.with.overflow.i32({{.*}}, i32 1)
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// CATCH_UB: llvm.ssub.with.overflow.i32({{.*}}, i32 1)
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// TRAPV_HANDLER: foo(
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--a;
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// -fwrapv should turn off inbounds for GEP's, PR9256
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extern int* P;
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++P;
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// DEFAULT: getelementptr inbounds i32, i32*
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// WRAPV: getelementptr i32, i32*
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// TRAPV: getelementptr inbounds i32, i32*
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// CATCH_UB: getelementptr inbounds i32, i32*
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// PR9350: char pre-increment never overflows.
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extern volatile signed char PR9350_char_inc;
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// DEFAULT: add i8 {{.*}}, 1
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// WRAPV: add i8 {{.*}}, 1
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// TRAPV: add i8 {{.*}}, 1
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// CATCH_UB: add i8 {{.*}}, 1
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++PR9350_char_inc;
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// PR9350: char pre-decrement never overflows.
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extern volatile signed char PR9350_char_dec;
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// DEFAULT: add i8 {{.*}}, -1
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// WRAPV: add i8 {{.*}}, -1
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// TRAPV: add i8 {{.*}}, -1
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// CATCH_UB: add i8 {{.*}}, -1
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--PR9350_char_dec;
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// PR9350: short pre-increment never overflows.
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extern volatile signed short PR9350_short_inc;
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// DEFAULT: add i16 {{.*}}, 1
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// WRAPV: add i16 {{.*}}, 1
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// TRAPV: add i16 {{.*}}, 1
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// CATCH_UB: add i16 {{.*}}, 1
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++PR9350_short_inc;
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// PR9350: short pre-decrement never overflows.
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extern volatile signed short PR9350_short_dec;
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// DEFAULT: add i16 {{.*}}, -1
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// WRAPV: add i16 {{.*}}, -1
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// TRAPV: add i16 {{.*}}, -1
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// CATCH_UB: add i16 {{.*}}, -1
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--PR9350_short_dec;
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// PR24256: don't instrument __builtin_frame_address.
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__builtin_frame_address(0 + 0);
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// DEFAULT: call i8* @llvm.frameaddress.p0i8(i32 0)
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// WRAPV: call i8* @llvm.frameaddress.p0i8(i32 0)
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// TRAPV: call i8* @llvm.frameaddress.p0i8(i32 0)
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// CATCH_UB: call i8* @llvm.frameaddress.p0i8(i32 0)
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}
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