e0ac46e69d
This reverts commit d618f1c3b12effd0c2bdb7d02108d3551f389d3d. This commit wasn't reviewed ahead of time and significant concerns were raised immediately after it landed. According to our developer policy this warrants immediate revert of the commit. https://llvm.org/docs/DeveloperPolicy.html#patch-reversion-policy Differential Revision: https://reviews.llvm.org/D155509
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(void) {
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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, ptr
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// WRAPV: getelementptr i32, ptr
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// TRAPV: getelementptr inbounds i32, ptr
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// CATCH_UB: getelementptr inbounds i32, ptr
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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 ptr @llvm.frameaddress.p0(i32 0)
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// WRAPV: call ptr @llvm.frameaddress.p0(i32 0)
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// TRAPV: call ptr @llvm.frameaddress.p0(i32 0)
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// CATCH_UB: call ptr @llvm.frameaddress.p0(i32 0)
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}
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