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TheRock/compiler/amd-llvm/llvm/test/CodeGen/Hexagon/swp-reuse-phi.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

35 lines
1.1 KiB
LLVM

; RUN: llc -mtriple=hexagon -enable-pipeliner -fp-contract=fast < %s
; REQUIRES: asserts
; Test that the code which reuses existing Phis works when the Phis are used
; in multiple stages. In this case, one can be reused, but the other must be
; generated.
; Function Attrs: nounwind
define void @f0(i32 %a0) #0 {
b0:
%v0 = icmp sgt i32 %a0, 0
br i1 %v0, label %b1, label %b2
b1: ; preds = %b1, %b0
%v1 = phi i32 [ %v11, %b1 ], [ 0, %b0 ]
%v2 = phi float [ %v4, %b1 ], [ undef, %b0 ]
%v3 = phi float [ %v2, %b1 ], [ undef, %b0 ]
%v4 = load float, ptr undef, align 4
%v5 = fmul float %v4, 0x3FEFAA0000000000
%v6 = fadd float undef, %v5
%v7 = fmul float %v2, 0xBFFFAA0000000000
%v8 = fadd float %v7, %v6
%v9 = fmul float %v3, 0x3FEFAA0000000000
%v10 = fadd float %v9, %v8
store float %v10, ptr undef, align 4
%v11 = add nsw i32 %v1, 1
%v12 = icmp eq i32 %v11, %a0
br i1 %v12, label %b2, label %b1
b2: ; preds = %b1, %b0
ret void
}
attributes #0 = { nounwind "target-cpu"="hexagonv55" }