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| ; RUN: llc -mtriple=x86_64-- -mcpu=core-avx2 < %s | FileCheck %s
;
; Test multiple peephole-time folds in a single basic block.
; <rdar://problem/16478629>
define <8 x float> @test_peephole_multi_fold(<8 x float>* %p1, <8 x float>* %p2) {
entry:
br label %loopbody
loopbody:
; CHECK: test_peephole_multi_fold:
; CHECK: vfmadd231ps ({{%rdi|%rcx}}),
; CHECK: vfmadd231ps ({{%rsi|%rdx}}),
%vsum1 = phi <8 x float> [ %vsum1.next, %loopbody ], [ zeroinitializer, %entry ]
%vsum2 = phi <8 x float> [ %vsum2.next, %loopbody ], [ zeroinitializer, %entry ]
%m1 = load <8 x float>, <8 x float>* %p1, align 1
%m2 = load <8 x float>, <8 x float>* %p2, align 1
%vsum1.next = tail call <8 x float> @llvm.x86.fma.vfmadd.ps.256(<8 x float> %m1, <8 x float> zeroinitializer, <8 x float> %vsum1)
%vsum2.next = tail call <8 x float> @llvm.x86.fma.vfmadd.ps.256(<8 x float> %m2, <8 x float> zeroinitializer, <8 x float> %vsum2)
%vsum1.next.1 = extractelement <8 x float> %vsum1.next, i32 0
%c = fcmp oeq float %vsum1.next.1, 0.0
br i1 %c, label %loopbody, label %loopexit
loopexit:
%r = fadd <8 x float> %vsum1.next, %vsum2.next
ret <8 x float> %r
}
declare <8 x float> @llvm.x86.fma.vfmadd.ps.256(<8 x float>, <8 x float>, <8 x float>)
|