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46d19bc0c7
If the arch is P8, we will select XFLOAD to load the floating point, and then, expand it to vsx and non-vsx X-form instruction post RA. This patch is trying to convert the X-form to D-form if it meets the requirement that one operand of the x-form inst is the special Zero register, and another operand fed by add inst. i.e. y = add imm, reg LFDX. 0, y --> LFD imm(reg) Reviewers: Nemanjai Differential Revision: https://reviews.llvm.org/D49007 llvm-svn: 340149
60 lines
2.1 KiB
LLVM
60 lines
2.1 KiB
LLVM
; Verify that small structures and float arguments are passed in the
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; least significant part of a stack slot doubleword.
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; 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 = "powerpc64le-unknown-linux-gnu"
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%struct.large_arg = type { [8 x i64] }
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%struct.small_arg = type { i16, i8 }
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@gl = common global %struct.large_arg zeroinitializer, align 8
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@gs = common global %struct.small_arg zeroinitializer, align 2
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@gf = common global float 0.000000e+00, align 4
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define void @callee1(%struct.small_arg* noalias nocapture sret %agg.result, %struct.large_arg* byval nocapture readnone %pad, %struct.small_arg* byval nocapture readonly %x) {
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entry:
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%0 = bitcast %struct.small_arg* %x to i32*
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%1 = bitcast %struct.small_arg* %agg.result to i32*
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%2 = load i32, i32* %0, align 2
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store i32 %2, i32* %1, align 2
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ret void
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}
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; CHECK: @callee1
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; CHECK: lwz {{[0-9]+}}, 104(1)
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; CHECK: blr
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define void @caller1() {
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entry:
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%tmp = alloca %struct.small_arg, align 2
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call void @test1(%struct.small_arg* sret %tmp, %struct.large_arg* byval @gl, %struct.small_arg* byval @gs)
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ret void
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}
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; CHECK: @caller1
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; CHECK: stw {{[0-9]+}}, 104(1)
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; CHECK: bl test1
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declare void @test1(%struct.small_arg* sret, %struct.large_arg* byval, %struct.small_arg* byval)
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define float @callee2(float %pad1, float %pad2, float %pad3, float %pad4, float %pad5, float %pad6, float %pad7, float %pad8, float %pad9, float %pad10, float %pad11, float %pad12, float %pad13, float %x) {
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entry:
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ret float %x
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}
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; CHECK: @callee2
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; CHECK: lfs {{[0-9]+}}, 136(1)
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; CHECK: blr
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define void @caller2() {
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entry:
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%0 = load float, float* @gf, align 4
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%call = tail call float @test2(float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float %0)
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ret void
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}
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; CHECK: @caller2
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; CHECK: stfs {{[0-9]+}}, 136({{[0-9]+}})
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; CHECK: bl test2
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declare float @test2(float, float, float, float, float, float, float, float, float, float, float, float, float, float)
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