File: no-junk-ftrunc.c

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llvm-toolchain-20 1%3A20.1.6-1~exp1
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// RUN: %clang_cc1 -fno-strict-float-cast-overflow %s -emit-llvm -o - | FileCheck %s --check-prefix=NOSTRICT

// When compiling with non-standard semantics, use intrinsics to inhibit the optimizer.
// This used to require a function attribute, so we check that it is NOT here anymore.

// NOSTRICT-LABEL: main
// NOSTRICT: call i32 @llvm.fptosi.sat.i32.f64
// NOSTRICT: call i32 @llvm.fptoui.sat.i32.f64
// NOSTRICT-NOT: strict-float-cast-overflow

// The workaround attribute is not applied by default.

// RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s --check-prefix=STRICT
// STRICT-LABEL: main
// STRICT: = fptosi
// STRICT: = fptoui
// STRICT-NOT: strict-float-cast-overflow


int main(void) {
  double d = 1e20;
  return (int)d != 1e20 && (unsigned)d != 1e20;
}