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04a61f5c33
Enable multiple COPY hints to eliminate more COPYs during register allocation. Note that this is something all targets should do, see https://reviews.llvm.org/D38128. Review: Nemanja Ivanovic llvm-svn: 323858
61 lines
2.0 KiB
LLVM
61 lines
2.0 KiB
LLVM
; RUN: llc -verify-machineinstrs < %s | FileCheck %s
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target datalayout = "E-m:e-i64:64-n32:64"
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target triple = "powerpc64-bgq-linux"
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define void @_Z4testSt7complexIfE(float %v0, float %v1, i64* %ref.tmp, float* %_M_value.realp.i.i, float* %_M_value.imagp.i.i) {
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entry:
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%v2 = load i64, i64* %ref.tmp, align 8
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%v3 = lshr i64 %v2, 32
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%v4 = trunc i64 %v3 to i32
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%v5 = bitcast i32 %v4 to float
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%v6 = trunc i64 %v2 to i32
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%v7 = bitcast i32 %v6 to float
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%mul_ad.i.i = fmul fast float %v5, %v1
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%mul_bc.i.i = fmul fast float %v7, %v0
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%mul_i.i.i = fadd fast float %mul_ad.i.i, %mul_bc.i.i
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%mul_ac.i.i = fmul fast float %v5, %v0
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%mul_bd.i.i = fmul fast float %v7, %v1
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%mul_r.i.i = fsub fast float %mul_ac.i.i, %mul_bd.i.i
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store float %mul_r.i.i, float* %_M_value.realp.i.i, align 4
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store float %mul_i.i.i, float* %_M_value.imagp.i.i, align 4
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ret void
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; CHECK-LABEL: @_Z4testSt7complexIfE
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; CHECK-NOT: ld {{[0-9]+}}, 0(5)
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; CHECK-NOT: stw
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; CHECK-NOT: rldicl
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; CHECK-DAG: lfs {{[0-9]+}}, 4(5)
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; CHECK-DAG: lfs {{[0-9]+}}, 0(5)
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; CHECK: blr
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}
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define i64* @_Z4testSt7complexIfE_idx(float %v0, float %v1, i64* %ref.tmp, float* %_M_value.realp.i.i, float* %_M_value.imagp.i.i) {
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entry:
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%r = getelementptr i64, i64* %ref.tmp, i64 1
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%v2 = load i64, i64* %r, align 8
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%v3 = lshr i64 %v2, 32
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%v4 = trunc i64 %v3 to i32
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%v5 = bitcast i32 %v4 to float
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%v6 = trunc i64 %v2 to i32
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%v7 = bitcast i32 %v6 to float
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%mul_ad.i.i = fmul fast float %v5, %v1
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%mul_bc.i.i = fmul fast float %v7, %v0
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%mul_i.i.i = fadd fast float %mul_ad.i.i, %mul_bc.i.i
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%mul_ac.i.i = fmul fast float %v5, %v0
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%mul_bd.i.i = fmul fast float %v7, %v1
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%mul_r.i.i = fsub fast float %mul_ac.i.i, %mul_bd.i.i
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store float %mul_r.i.i, float* %_M_value.realp.i.i, align 4
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store float %mul_i.i.i, float* %_M_value.imagp.i.i, align 4
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ret i64* %r
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; CHECK-LABEL: @_Z4testSt7complexIfE
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; CHECK-NOT: ld {{[0-9]+}}, 8(5)
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; CHECK-NOT: ldu {{[0-9]+}}, 8(5)
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; CHECK-NOT: stw
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; CHECK-NOT: rldicl
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; CHECK-DAG: lfsu {{[0-9]+}}, 8(3)
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; CHECK-DAG: lfs {{[0-9]+}}, 4(3)
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; CHECK: blr
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}
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