63ecd2a725
This fixes https://github.com/llvm/llvm-project/issues/57589, and aligns Clang with the behavior of current versions of gcc. There is a new option, -mdaz-ftz, to control the linking of the file that sets FTZ/DAZ on startup, and this flag is on by default if -ffast-math is present and -shared isn't. This also partially reverts fa7cd549d60 in that it disables the attempt to set the IR denormal-fp-math attribute based on whether or not -ffast-math is applied as it is insufficiently reliable.
11 lines
598 B
C
11 lines
598 B
C
// RUN: %clang -### -target arm-unknown-linux-gnu -c %s -v 2>&1 | FileCheck -check-prefix=CHECK-IEEE %s
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// RUN: %clang -### -target i386-unknown-linux-gnu -c %s -v 2>&1 | FileCheck -check-prefix=CHECK-IEEE %s
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// RUN: %clang -### -target x86_64-unknown-linux-gnu --sysroot=%S/Inputs/basic_linux_tree -c %s -v 2>&1 | FileCheck -check-prefix=CHECK-IEEE %s
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// RUN: %clang -### -target x86_64-scei-ps4 -c %s -v 2>&1 | FileCheck -check-prefix=CHECK-PRESERVESIGN %s
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// Flag omitted for default
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// CHECK-IEEE-NOT: -fdenormal-fp-math
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// CHECK-PRESERVESIGN: -fdenormal-fp-math=preserve-sign,preserve-sign
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