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Make FP zero to be legal FP immediate via LOAD ZERO

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76034 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov
2009-07-16 14:24:16 +00:00
parent 5753f47f5b
commit 1ada84daaf
2 changed files with 48 additions and 0 deletions
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lib/Target/SystemZ/SystemZISelLowering.cpp
+5
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@@ -51,6 +51,11 @@ SystemZTargetLowering::SystemZTargetLowering(SystemZTargetMachine &tm) :
if (!UseSoftFloat) {
addRegisterClass(MVT::f32, SystemZ::FP32RegisterClass);
addRegisterClass(MVT::f64, SystemZ::FP64RegisterClass);
addLegalFPImmediate(APFloat(+0.0)); // lzer
addLegalFPImmediate(APFloat(+0.0f)); // lzdr
addLegalFPImmediate(APFloat(-0.0)); // lzer + lner
addLegalFPImmediate(APFloat(-0.0f)); // lzdr + lndr
}
// Compute derived properties from the register classes