File: c-ternary.c

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (15 lines) | stat: -rw-r--r-- 753 bytes parent folder | download | duplicates (23) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
 
// RUN: %clang_cc1 -triple x86_64-apple-macosx10.11.0 -x c %s -o - -emit-llvm -fprofile-instrument=clang | FileCheck %s

// PR32019: Clang can lower some ternary operator expressions to select
// instructions. Make sure we only increment the profile counter for the
// condition when the condition evaluates to true.
// CHECK-LABEL: define{{.*}} i32 @f1
int f1(int x) {
  // CHECK: [[TOBOOL:%.*]] = icmp ne i32 %{{.*}}, 0
  // CHECK-NEXT: [[STEP:%.*]] = zext i1 [[TOBOOL]] to i64
  // CHECK-NEXT: [[COUNTER:%.*]] = load i64, ptr getelementptr inbounds ([2 x i64], ptr @__profc_f1, i32 0, i32 1)
  // CHECK-NEXT: add i64 [[COUNTER]], [[STEP]]
  // CHECK: [[COND:%.*]] = select i1 [[TOBOOL]], i32 0, i32 1
  return x ? 0 : 1;
// CHECK: ret i32 [[COND]]
}