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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

68 lines
1.9 KiB
LLVM

; RUN: llc -mtriple=hexagon -hexagon-hwloop-preheader < %s
; REQUIRES: asserts
; Checks that a subreg in a Phi is propagated correctly when a
; new preheader is created in the Hardware Loop pass.
; Function Attrs: nounwind
define void @f0() #0 {
b0:
br label %b2
b1: ; preds = %b2, %b1
%v0 = or i64 0, undef
%v1 = add nsw i64 0, %v0
%v2 = add nsw i64 %v1, 0
%v3 = add nsw i64 %v2, 0
%v4 = add nsw i64 %v3, 0
%v5 = add nsw i64 %v4, 0
%v6 = add nsw i64 %v5, 0
%v7 = load i32, ptr undef, align 4
%v8 = ashr i32 %v7, 5
%v9 = sext i32 %v8 to i64
%v10 = mul nsw i64 %v9, %v9
%v11 = add nsw i64 %v6, %v10
%v12 = add nsw i64 %v11, 0
%v13 = add nsw i64 0, %v12
%v14 = add nsw i64 %v13, 0
%v15 = add nsw i64 %v14, 0
%v16 = add nsw i64 %v15, 0
%v17 = add nsw i64 %v16, 0
%v18 = add nsw i64 %v17, 0
%v19 = add nsw i64 %v18, 0
%v20 = add nsw i64 %v19, 0
%v21 = lshr i64 %v20, 32
%v22 = trunc i64 %v21 to i32
br i1 undef, label %b1, label %b3
b2: ; preds = %b5, %b0
br i1 undef, label %b1, label %b4
b3: ; preds = %b1
br i1 false, label %b5, label %b4
b4: ; preds = %b4, %b3, %b2
%v23 = phi i32 [ %v37, %b4 ], [ undef, %b2 ], [ %v22, %b3 ]
%v24 = zext i32 %v23 to i64
%v25 = shl nuw i64 %v24, 32
%v26 = or i64 %v25, 0
%v27 = add nsw i64 0, %v26
%v28 = add nsw i64 %v27, 0
%v29 = add nsw i64 %v28, 0
%v30 = add nsw i64 %v29, 0
%v31 = add nsw i64 %v30, 0
%v32 = add nsw i64 %v31, 0
%v33 = add nsw i64 %v32, 0
%v34 = add nsw i64 %v33, 0
%v35 = trunc i64 %v34 to i32
%v36 = lshr i64 %v34, 32
%v37 = trunc i64 %v36 to i32
%v38 = icmp slt i32 undef, undef
br i1 %v38, label %b4, label %b5
b5: ; preds = %b4, %b3
br label %b2
}
attributes #0 = { nounwind "target-cpu"="hexagonv55" }