bc5b5ea037
@kpn pointed out that the global variable initialization functions didn't have the "strictfp" metadata set correctly, and @rjmccall said that there was buggy code in SetFPModel and StartFunction, this patch is to solve those problems. When Sema creates a FunctionDecl, it sets the FunctionDeclBits.UsesFPIntrin to "true" if the lexical FP settings (i.e. a combination of command line options and #pragma float_control settings) correspond to ConstrainedFP mode. That bit is used when CodeGen starts codegen for a llvm function, and it translates into the "strictfp" function attribute. See bugs.llvm.org/show_bug.cgi?id=44571 Reviewed By: Aaron Ballman Differential Revision: https://reviews.llvm.org/D102343
21 lines
710 B
C++
21 lines
710 B
C++
// RUN: %clang_cc1 -ffp-contract=on -triple %itanium_abi_triple -emit-llvm -o - %s | FileCheck %s
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// RUN: %clang_cc1 -ffp-contract=on -triple x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s
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// Verify that float_control does not pertain to initializer expressions
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float y();
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float z();
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#pragma float_control(except, on)
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class ON {
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float w = 2 + y() * z();
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// CHECK-LABEL: define {{.*}} @_ZN2ONC2Ev{{.*}}
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// CHECK: llvm.experimental.constrained.fmul{{.*}}tonearest{{.*}}strict
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};
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ON on;
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#pragma float_control(except, off)
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class OFF {
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float w = 2 + y() * z();
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// CHECK-LABEL: define {{.*}} @_ZN3OFFC2Ev{{.*}}
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// CHECK-NOT: llvm.experimental.constrained.fmul{{.*}}tonearest{{.*}}strict
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};
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OFF off;
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