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30cbccb029
copysign/copysignf never become function calls (because the SDAG expansion code does not lower to the corresponding function call, but rather directly implements the associated logic), but copysignl almost always is lowered into a call to the requested libm functon (and, thus, might clobber CTR). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188727 91177308-0d34-0410-b5e6-96231b3b80d8
29 lines
1002 B
LLVM
29 lines
1002 B
LLVM
; RUN: llc < %s -mcpu=ppc | FileCheck %s
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target datalayout = "E-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v128:128:128-n32"
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target triple = "powerpc-unknown-linux-gnu"
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define ppc_fp128 @foo(ppc_fp128* nocapture %n, ppc_fp128 %d) nounwind readonly {
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%i.06 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%x.05 = phi ppc_fp128 [ %d, %entry ], [ %conv, %for.body ]
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%arrayidx = getelementptr inbounds ppc_fp128* %n, i32 %i.06
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%0 = load ppc_fp128* %arrayidx, align 8
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%conv = tail call ppc_fp128 @copysignl(ppc_fp128 %x.05, ppc_fp128 %d) nounwind readonly
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%inc = add nsw i32 %i.06, 1
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%exitcond = icmp eq i32 %inc, 2048
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret ppc_fp128 %conv
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}
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declare ppc_fp128 @copysignl(ppc_fp128, ppc_fp128) #0
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; CHECK: @foo
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; CHECK-NOT: mtctr
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