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annotate clang/test/CodeGenCXX/cxx2a-left-shift.cpp @ 206:f17a3b42b08b

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Added tag before-12 for changeset b7591485f4cd
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 07 Jun 2021 21:25:57 +0900
parents 1d019706d866
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 // RUN: %clang_cc1 -std=c++2a -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefixes=CHECK,REGULAR
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2 // RUN: %clang_cc1 -std=c++2a -fsanitize=shift-base,shift-exponent -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefixes=CHECK,SANITIZED
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3
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4 // CHECK-LABEL: @_Z12lsh_overflow
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5 int lsh_overflow(int a, int b) {
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6 // SANITIZED: %[[RHS_INBOUNDS:.*]] = icmp ule i32 %[[RHS:.*]], 31
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7 // SANITIZED-NEXT: br i1 %[[RHS_INBOUNDS]], label %[[VALID:.*]], label
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8
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9 // SANITIZED: call void @__ubsan_handle_shift_out_of_bounds
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10
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11 // No check for the LHS here.
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12 // SANITIZED: [[VALID]]:
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13 // SANITIZED-NEXT: shl i32 %
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14 // SANITIZED-NEXT: ret i32
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15
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16 // Just ensure there's no nsw nuw flags here.
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17 // REGULAR: shl i32 %
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18 return a << b;
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19 }