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llvm-6502/test/CodeGen/X86/2007-09-27-LDIntrinsics.ll

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Teach codegen to lower llvm.powi to an efficient (but not optimal) multiply sequence when the power is a constant integer. Before, our codegen for std::pow(.., int) always turned into a libcall, which was really inefficient. This should also make many gfortran programs happier I'd imagine. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92388 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-01 03:32:16 +00:00
; RUN: llc < %s | FileCheck %s
Add sqrt and powi intrinsics for long double. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42423 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-28 01:08:20 +00:00
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i686-apple-darwin8"
Teach codegen to lower llvm.powi to an efficient (but not optimal) multiply sequence when the power is a constant integer. Before, our codegen for std::pow(.., int) always turned into a libcall, which was really inefficient. This should also make many gfortran programs happier I'd imagine. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92388 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-01 03:32:16 +00:00
define x86_fp80 @foo(x86_fp80 %x) nounwind{
Add sqrt and powi intrinsics for long double. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42423 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-28 01:08:20 +00:00
entry:
Teach codegen to lower llvm.powi to an efficient (but not optimal) multiply sequence when the power is a constant integer. Before, our codegen for std::pow(.., int) always turned into a libcall, which was really inefficient. This should also make many gfortran programs happier I'd imagine. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92388 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-01 03:32:16 +00:00
%tmp2 = call x86_fp80 @llvm.sqrt.f80( x86_fp80 %x )
ret x86_fp80 %tmp2
; CHECK: foo:
; CHECK: fldt 4(%esp)
; CHECK-NEXT: fsqrt
; CHECK-NEXT: ret
Add sqrt and powi intrinsics for long double. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42423 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-28 01:08:20 +00:00
}
declare x86_fp80 @llvm.sqrt.f80(x86_fp80)
Teach codegen to lower llvm.powi to an efficient (but not optimal) multiply sequence when the power is a constant integer. Before, our codegen for std::pow(.., int) always turned into a libcall, which was really inefficient. This should also make many gfortran programs happier I'd imagine. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92388 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-01 03:32:16 +00:00
define x86_fp80 @bar(x86_fp80 %x) nounwind {
Add sqrt and powi intrinsics for long double. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42423 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-28 01:08:20 +00:00
entry:
Teach codegen to lower llvm.powi to an efficient (but not optimal) multiply sequence when the power is a constant integer. Before, our codegen for std::pow(.., int) always turned into a libcall, which was really inefficient. This should also make many gfortran programs happier I'd imagine. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92388 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-01 03:32:16 +00:00
%tmp2 = call x86_fp80 @llvm.powi.f80( x86_fp80 %x, i32 3 )
ret x86_fp80 %tmp2
; CHECK: bar:
; CHECK: fldt 4(%esp)
; CHECK-NEXT: fld %st(0)
; CHECK-NEXT: fmul %st(1)
; CHECK-NEXT: fmulp %st(1)
; CHECK-NEXT: ret
Add sqrt and powi intrinsics for long double. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42423 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-28 01:08:20 +00:00
}
declare x86_fp80 @llvm.powi.f80(x86_fp80, i32)
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